Unitech HT730 / HT730 Plus troubleshooting guide: errors, faults and fixes

Short answer: According to Unitech, there are two possible cases. If both red lights flash together at power-on, the battery is below 15%: put the mobile computer on charge. If they flash alternately while the charger is connected, the battery is missing or incorrectly installed.

Likely cause

The light table in the HT730 manual (§ 1.4.5, “Checking the LED Status”) and in the quick start guide distinguishes between both red lights flashing simultaneously at power-on (battery below 15%) and alternate flashing with the charger connected (battery not installed or incorrectly positioned). The HT730 Plus manual gives the same information.

Caution: Unitech states that the battery is removed by hand: do not use tools, do not open it and do not disassemble it. Use only genuine Unitech batteries: replacing it with an incorrect type creates a risk of explosion.

What to do

1. Simultaneous flashing at power-on: connect the mobile computer to its USB-C cable and mains adapter, or place it in its cradle. The light turns solid red while charging, then solid green when the battery is full.
2. Alternate flashing, charger connected: unlock the latch, remove the battery and refit it, aligning its contacts with those in the compartment.
3. HT730: insert the cover at about 45°, press down on it, then slide the latch into the locked position. HT730 Plus: insert the battery from the bottom and press firmly.
4. Check that the cover is properly closed, then reconnect the charger: the light should turn solid red.
5. The quick start guide says to keep the connectors free of dust, grease, mud and water: a dirty connector can prevent communication or cause a short circuit.

Sources: 1.4.5 Checking the LED Status (opens in a new window) – HT730 (29 keys) User's Manual V2.1 · LED Indicators (opens in a new window) – HT730 Quick Start Guide (29 Keys) V1.6 · 1.5 Getting Started (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).

Short answer: The keypad is in an input mode. According to Unitech, the blue key switches to function mode (solid blue light) and the yellow key to alpha mode (solid yellow light); pressing the same key returns to numeric mode. The blue light also indicates a message notification.

Likely cause

The keypad definition (HT730 manual, § 1.5; HT730 Plus manual, § 1.3) states that the blue key toggles between numeric and function modes, and the yellow key between numeric and alpha modes. The active mode is shown by an icon in the status bar and by the light. The light table also associates blue with messages.

What to do

1. Look at the status bar icon to see which mode is active.
2. Solid blue light: press the blue key again to return to the numeric keypad. In function mode, P1 gives F11 and P2 gives F12; on the HT730 Plus, keys 1 to 0 give F1 to F10.
3. Solid yellow light: press the yellow key again to return to the numeric keypad. In alpha mode, keys 2 to 9 enter letters (abc to wxyz).
4. If no mode key is active, open the notification panel: Unitech associates the blue light with messages.

Sources: 1.5 Keypad Definition; 1.4.5 Checking the LED Status (opens in a new window) – HT730 (29 keys) User's Manual V2.1 · 1.3 Keypad Definition (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).

Short answer: Test the scanner in the USS (Unitech Scan Service) app: start a scan and aim at the barcode. If Picklist mode is active, only the barcode aligned with the aimer is decoded. As a last resort, restore the USS factory settings from its “Factory Default” menu.

Likely cause

The HT730 manual (§ 2.1 and § 3.1) presents USS as the mobile computer's scanning service: it is used to test scanning, to set the multi-decode and Picklist modes, and to return to factory settings. A good read turns on the green light.

Caution: The scanner is a Class 2 laser product. Unitech warns that using controls, adjustments or procedures other than those in the manual may result in hazardous laser radiation exposure, and that optical instruments (binoculars, magnifiers) increase the risk to the eyes.

What to do

1. Open USS: Settings > USS (Unitech scan service) on the HT730, Settings > Enterprise Features > USS on the HT730 Plus, or tap USS in the notification bar.
2. Start a scan with one of the methods provided: side triggers, Scan key on the keypad or the app's scan button (Start Scan on the HT730).
3. Aim the scanner window at the barcode: the data should appear on the display and the light should turn green.
4. In the USS menu, open Scanner Settings and check Picklist Mode: when enabled, it only decodes the barcode aligned with the laser crosshair or aiming dot.
5. If the triggers or the Scan key no longer do anything, check that they have not been remapped in KeyRemap (see the KeyRemap entry).
6. To start again from the scanner's factory settings, open the USS menu and choose Factory Default. You can save your settings first with Save / Load Settings.

The manual refers to the USS manual for details of the settings (symbologies, terminator, trigger modes).

Sources: 2.1 Barcode Setting; 3.1 USS (Unitech scan service); Laser Information (opens in a new window) – HT730 (29 keys) User's Manual V2.1 · 3.2 USS (Unitech Scan Service) (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).

Short answer: In USS, open Scanner settings, then Trigger Modes, and choose “Aim only”: according to the Unitech FAQ, the scanner illumination is then turned off. The illumination brightness, however, can only be adjusted on certain scan engines.

Likely cause

The HT730 FAQ states that brightness adjustment depends on the scan engine's PSoC component: it is possible on the N3603, N4603 and N5703 (HS7) engines, not on the N6603 and N6703.

What to do

1. Open Settings > USS > Scanner settings > Trigger Modes.
2. Select Aim only: only the aimer remains active.
3. For brightness: adjustable on the N3603, N4603 and N5703 (HS7) engines; not adjustable on the N6603 and N6703.

Source: USS – scanner illumination LED / LED brightness (opens in a new window) – HT730 FAQ (Unitech) (official documentation).

Short answer: Use a rule.txt file: the Unitech HT730 FAQ gives a two-line rule that removes asterisks from scanned data. The scanning service reads this file at start-up and applies it to the data sent.

Likely cause

The HT730 FAQ provides the rule. The Unitech Android programming manual explains that the rule.txt file, placed in the /sdcard/ folder, is read at start-up by the scanning service and applies to data transmitted via Scan2Key as well as via intent.

Caution: According to the programming manual, if no rule matches a scanned barcode, nothing is transmitted. Add a general rule with no modification if other barcodes must pass through unchanged.

What to do

1. Create a text file named rule.txt.
2. Enter the two lines from the HT730 FAQ: q,1,t,0,0 (qualification line) then m,1,r,\*, (replacement line).
3. Copy the file to the mobile computer's /sdcard/ folder.
4. The scanning service reads the file when it starts: restart the mobile computer to apply the rule.
5. To stop the data being modified, delete the file.

Copy the two lines from the Unitech FAQ to avoid any character errors.

Sources: USS – remove all asterisks from a barcode (opens in a new window) – HT730 FAQ (Unitech) · 2.7 rule.txt (Tips Using Scan2Key) (opens in a new window) – Android Programming Manual V3.6 (Unitech) (official documentation).

Short answer: For smooth data capture, Unitech recommends using intents: in Velocity, choose intent-based data delivery; in USS, clear the terminator, disable “Scan to Key” and enter the Wavelink intent action and extra.

Likely cause

The HT730 FAQ (USS section) describes how to configure Wavelink Velocity and USS together.

What to do

1. In Wavelink Velocity, set scan data delivery to Intent.
2. In USS, open App Settings > Append Settings > Terminator and leave the field empty.
3. Disable Scan to Key.
4. Set the intent action to com.wavelink.intent.action.BARCODE.
5. Set the intent extra to com.wavelink.extra.data_string.

Source: USS – smooth scan data capture with Ivanti Wavelink (Velocity) (opens in a new window) – HT730 FAQ (Unitech) (official documentation).

Short answer: Disable Wi-Fi power saving mode: Settings, WLAN Advanced, Power Save Mode, Disable. This is the solution given by the Unitech FAQ for slowness of the HT730 with Wavelink Telnet.

Likely cause

According to the HT730 manual, the Power Save Mode option puts the WLAN module into a reduced power consumption setting.

What to do

1. HT730: open Settings > WLAN Advanced. HT730 Plus: Settings > Enterprise Features > WLAN Advanced > Advanced.
2. Set Power Save Mode to Disable.
3. Tap Apply to save.

Sources: OS – slow response with Wavelink Telnet (opens in a new window) – HT730 FAQ (Unitech) · 2.4 WLAN Setting – WLAN Advanced (opens in a new window) – HT730 (29 keys) User's Manual V2.1 (official documentation).

Short answer: A network with a hidden SSID does not appear in the list. Add it manually in Settings, Network & internet, with its name and security type, then change “Hidden network” from No to Yes in the advanced options.

Likely cause

The HT730 FAQ states that connecting to a hidden SSID is only possible after declaring the network as hidden.

What to do

1. Open Settings > Network & internet and turn on WLAN.
2. Tap the add network option (+ Add network on the HT730 Plus).
3. Enter the network name and choose the same security type as the access point.
4. In the advanced options, change Hidden network from No to Yes.
5. Select the network, enter the password and tap Connect: the WLAN icon appears in the status bar.

Sources: OS – connecting to a hidden SSID (opens in a new window) – HT730 FAQ (Unitech) · 2.4 WLAN Setting (opens in a new window) – HT730 (29 keys) User's Manual V2.1 · 2.3 WLAN Setting (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).

Short answer: Use the WLAN Advanced settings, provided by Unitech to improve roaming in areas of weak coverage. “Roaming Trigger” sets the signal level below which the mobile computer looks for a better access point; “Roaming Delta” sets the signal difference required before switching access point.

Likely cause

The HT730 manual (§ 2.4) and the HT730 Plus manual (§ 2.3) describe the roaming parameters, their ranges and their default values.

What to do

1. HT730: open Settings > WLAN Advanced. HT730 Plus: Settings > Enterprise Features > WLAN Advanced > Advanced.
2. Roaming Trigger: from -10 to -120 dBm; default value -76 dBm on the HT730, -65 dBm on the HT730 Plus.
3. Roaming Delta: from 0 to 30 dB, 5 dB by default.
4. Roaming Scan Period: minimum time on the current access point before switching, from 0 to 60 seconds, 0 by default.
5. Tap Apply. To return to the original values, use Initialize; import and export let you copy the settings from one mobile computer to another.

Sources: 2.4 WLAN Setting – WLAN Advanced (opens in a new window) – HT730 (29 keys) User's Manual V2.1 · 2.3 WLAN Setting – WLAN Advanced (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).

Short answer: Use StageGO: scan the corresponding StageGO QR code, or open the StageGO app, then Configuration, wireless, “WiFi - Detect Captive Portal Mode”, and disable the option.

Likely cause

The HT730 FAQ (OS section) refers to StageGO for this setting.

What to do

1. Open the StageGO app on the mobile computer.
2. Go to Configuration > wireless.
3. Disable WiFi - Detect Captive Portal Mode.
4. For a fleet of devices, prepare this setting in a StageGO script (see the StageGO entry).

Source: OS – disabling WiFi Detect Captive Portal Mode (opens in a new window) – HT730 FAQ (Unitech) (official documentation).

Short answer: Open Settings, Connected devices, then Connection Preferences, and turn on Bluetooth. The available devices are displayed: select the one to pair.

Likely cause

The HT730 manual (§ 2.5, PAN Setting) and the HT730 Plus manual (§ 2.4) describe turning on Bluetooth and pairing.

What to do

1. Open Settings > Connected devices.
2. Tap Connection Preferences and turn on Bluetooth.
3. Select the available device to pair it.

The Unitech manuals do not give any further details on pairing (confirmation code, profiles).

Sources: 2.5 PAN Setting (opens in a new window) – HT730 (29 keys) User's Manual V2.1 · 2.4 PAN Setting (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).

Short answer: When connected via USB-C, the HT730 is first recognised by the computer as a charging device. Drag the notification panel down and choose “File transfers” to access the files.

Likely cause

The HT730 manual (§ 2.7, PC Setting) and the HT730 Plus manual (§ 2.6) describe this switch to file transfer mode.

What to do

1. Connect the mobile computer to the computer with a USB-C cable.
2. Drag the notification panel down from the top of the screen.
3. Select File transfers.
4. HT730 Plus: if the “Android System Charging this device via USB” notification does not appear, tap Clear All and try again.
5. In a cradle, only the USB, Ethernet or DisplayPort versions transfer data; the charge-only cradle only charges.

Sources: 2.7 PC Setting (opens in a new window) – HT730 (29 keys) User's Manual V2.1 · 2.6 PC Setting (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 · Cradle variants (opens in a new window) – HT730 1-S Cradle Series Quick Start Guide (official documentation).

Short answer: Charge the HT730 with a USB-C cable connected to the mains adapter, or in its cradle, between 0 °C and 40 °C. The light should turn solid red while charging, then solid green. Clean the connectors if they are dirty.

Likely cause

Unitech recommends its USB-C cable and adapter, and asks you to use only the adapter supplied or an adapter with the same specification: an unsuitable adapter can damage the product. The battery notice prohibits charging below 0 °C, and the quick start guide states that dirty connectors can cause a loss of communication, a short circuit or overheating.

Caution: Only use the adapter supplied or an adapter with the same specification. The adapter supplied is not designed for outdoor use: protect it from water, rain and high humidity, and unplug it once the battery is charged.

What to do

1. Plug the USB-C cable into the mobile computer's port, the other end into the mains adapter, then the adapter into a socket.
2. For the very first charge of the HT730, Unitech states about 24 hours. In the cradle, a full charge takes less than 4 hours.
3. Check the light: solid red while charging, solid green when the battery is full. If it flashes red, see the entry on the flashing red light.
4. Only charge between 0 °C and 40 °C, never below 0 °C. Do not charge a battery that heats up after a long period of inactivity.
5. Clean the battery and cradle contacts with isopropyl alcohol, then let the cradle connectors dry for 10 to 30 minutes before powering on again.
6. If charging stops at 80% or 50%, this is not a fault: see the Battery Care charge limit.

When to call a technician: a connector on the mobile computer, battery or cradle is damaged: Unitech requires it to be fully repaired before any further use, to avoid a short circuit.

The data sheet in the manual gives a charging temperature of 0 °C to 45 °C; the battery notice requires 0 °C to 40 °C. We have used the more cautious range. The HT730 Plus manual does not give a charging time.

Sources: 1.4.2 Charging the Battery; Battery Notice; Adapter Notice (opens in a new window) – HT730 (29 keys) User's Manual V2.1 · Charging; Caution (opens in a new window) – HT730 Quick Start Guide (29 Keys) V1.6 · 1.5 Getting Started; Battery Notice (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).

Short answer: Check the charge limit in Battery Care. Unitech lets you cap charging at 80% or 50% to preserve the battery; the default value is 100%. Restore 100% if you need the full battery life.

Likely cause

The HT730 manual (§ 1.4.3, Charging Limit) and the HT730 Plus manual (Battery Care) describe this setting, which limits charging to extend the battery's lifespan.

What to do

1. HT730: open Settings > Battery, then Battery Care.
2. HT730 Plus: open Settings > Enterprise Features > Battery Care.
3. Choose the limit: 100% (default), 80% or 50%.
4. For long-term storage, Unitech recommends leaving the battery at about 50% charge.

The HT730 Plus manual also advises keeping the charge between 20% and 80% and avoiding charging overnight.

Sources: 1.4.3 Battery Info – Charging Limit (opens in a new window) – HT730 (29 keys) User's Manual V2.1 · Battery Health and Battery Care (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).

Short answer: Check BatteryInfo: the HT730 displays the battery health status, and Unitech recommends replacing it below 60%. The manual also advises replacement every year or after 500 charge cycles.

Likely cause

According to the manual, the health status is displayed in three levels (above 80%, above 60%, below 60%). The battery notice adds that a drop in performance of more than 20% marks the end of its life, and that slight swelling after one year or 500 cycles is normal but requires replacement.

Caution: Do not disassemble, crush, puncture or short-circuit the battery; do not expose it to water, fire or heat. In the event of a leak, rinse the skin or eyes with water for 15 minutes and see a doctor.

What to do

1. HT730: open Settings > BatteryInfo. HT730 Plus: Settings > Enterprise Features > BatteryInfo.
2. Read the health status; it also appears on the lock screen and in the notification bar.
3. Below 60%, replace the battery with a genuine Unitech battery.
4. After long storage, the HT730 Plus manual advises several charge and discharge cycles, then checking again; if the health remains below 60%, replace the battery.
5. For prolonged storage, recharge the battery to at least 50% every six months and store it between -20 °C and 60 °C, ideally at room temperature.

When to call a technician: the battery is swollen: Unitech asks for it to be replaced and disposed of in accordance with the applicable recycling rules.

Sources: 1.4.3 Battery Info – Health Service; Battery Notice (opens in a new window) – HT730 (29 keys) User's Manual V2.1 · Battery Health and Battery Care; Battery Notice (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).

Short answer: The HT730 supports hot swapping. Slide the battery latch to the unlocked position: a 59-second countdown appears. Replace the battery within this time and the applications stay running.

Likely cause

The HT730 manual (§ 2.14, Battery Swap) describes hot swapping; the data sheet specifies that applications stay running for up to 1 minute during the change.

Caution: Unitech states that the battery is removed by hand: do not use tools, do not open it and do not disassemble it. Use only genuine Unitech batteries: replacing it with an incorrect type creates a risk of explosion.

What to do

1. Slide the latch to the unlocked position: the countdown window appears.
2. Lift the cover by its two notches, then remove the battery by its tab.
3. Fit a charged battery, aligning its contacts, insert the cover at about 45°, press down on it and lock the latch.
4. Check that the cover is properly closed: you can resume work without restarting.
5. Do not connect or remove a USB flash drive during the swap (see the entry on forced shutdown).

The HT730 Plus manual states the same swap time (up to 1 minute) without detailing the procedure; on that model, the battery is removed by lifting the latch on both sides.

Sources: 2.14 Battery Swap; 1.4.1 Install/Remove the Battery Cover; 1.3 Specifications (opens in a new window) – HT730 (29 keys) User's Manual V2.1 · 1.4 Specifications; 1.5 Getting Started (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).

Short answer: This is the behaviour described by Unitech: connecting or disconnecting a USB flash drive during a battery swap causes a forced shutdown of the HT730. Finish the swap before handling the drive.

Likely cause

The HT730 FAQ (HW section) says not to connect or disconnect a USB drive during a battery swap, otherwise the mobile computer shuts down.

What to do

1. Finish the battery swap, with the cover closed and the latch locked (see changing the battery).
2. Then connect or remove the USB flash drive.
3. If the mobile computer has shut down, turn it back on with the Power button.

Source: HW – USB disk during battery swap (opens in a new window) – HT730 FAQ (Unitech) (official documentation).

Short answer: According to Unitech, the solid blue light indicates that the cradle is powered, on standby. The battery slot light is red while the spare battery is charging and blue when it is charged. Charging of the mobile computer itself is shown on the HT730's light: red, then green.

Likely cause

The HT730 1-slot cradle guide specifies that the cradle light does not change when the mobile computer is placed in it: it is the mobile computer's light that indicates charging.

What to do

1. The solid blue light confirms that the cradle is powered; check the adapter (5 V / 6 A, supplied without a mains cord) and its cord.
2. Place the HT730 in the cradle with its bottom bumpers or its boot case: the guide states that charging works when fitted this way.
3. Look at the mobile computer's light: red while charging, green when charging is complete.
4. Spare battery: place it in the charging slot (red while charging, blue once charged). On the HT730 Plus cradle, tilt it at 45°, press down and wait for the latch to “click”.
5. Keep the connectors free of dust, grease, mud and water.

When to call a technician: a cradle connector is damaged: Unitech requires a full repair before any use, to avoid a short circuit.

HT730 1-slot cradle versions: charge only, USB (transfer to a PC), Ethernet (RJ45 or USB 2.0 host) and DisplayPort. To fix the cradle to a table, the Unitech FAQ requires a screw no more than 3.5 mm in diameter: a larger screw can crack the plastic.

Sources: Cradle LED Indicators; HT730 LED Indicators (opens in a new window) – HT730 1-S Cradle Series Quick Start Guide · Cradle LEDs; Battery Charging Slot (opens in a new window) – HT730 Plus Series 1-Slot Cradle Series Quick Start Guide V1.2 · Cradle – fixing the 1-slot cradle (opens in a new window) – HT730 FAQ (Unitech) (official documentation).

Short answer: According to Unitech, the charging light flashes red when the charger is powered but does not detect any battery. It is solid red while charging and goes off when charging is complete.

Likely cause

The HT730 4-slot charger guide, like the HT730 Plus one, describes two lights: the power light (solid red: power supply connected; off: not connected) and the charging status light for each slot.

What to do

1. Plug the adapter cord (12 V / 5 A) into the charger socket, then the adapter into the mains: the power light turns solid red.
2. Insert the battery: the charger detects it and starts charging (solid red light).
3. Flashing red light: the charger cannot see a battery; check that it is properly seated in its slot.
4. Light off, battery in place: charging is complete.
5. Keep the connectors clean; a damaged connector must be repaired before use.

The HT730 Plus charger guide states that it accepts HT730 Plus and HT730 Plus UHF batteries; it does not mention HT730 batteries.

Sources: LED Indicators (opens in a new window) – HT730 4-S Battery Charger Quick Start Guide V1.2 · LED Indicators (opens in a new window) – HT730 Plus Series 4-Slot Battery Charger Quick Start Guide V1.3 (official documentation).

Short answer: Open Settings, System, Advanced, Reset options (on the HT730 Plus: Settings, System, Reset options) and choose “Erase all data (factory reset)”. Unitech specifies that this option erases all folders: all data on the mobile computer is lost.

Likely cause

The HT730 manual (§ 2.10, Performing Factory data reset) and the HT730 Plus manual (§ 2.10) describe resetting from the Android settings. If the mobile computer can no longer access the settings, Unitech describes access via the Recovery menu.

Caution: The reset erases all data. First export what you want to keep: USS settings (Save), KeyRemap keys_config.txt file, WLAN Advanced settings (Export).

What to do

1. On the home screen, swipe up to display the apps, then open Settings.
2. HT730: System > Advanced > Reset options. HT730 Plus: System > Reset options.
3. Select Erase all data (factory reset), then confirm with Erase all data.
4. After the restart, redo the initial setup: language, WLAN, date and time.

Sources: 2.10 Performing Factory data reset (opens in a new window) – HT730 (29 keys) User's Manual V2.1 · 2.10 Performing Factory Data Reset (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).

Short answer: Use the KeyRemap app: it lets you remap the SCAN_LEFT, SCAN_RIGHT, SCAN_KEY, PROG_1, PROG_2 and TRIGGER_GUN keys. To return to the original assignments, choose “Reset all settings” in its menu.

Likely cause

The HT730 manual (§ 2.11) and the HT730 Plus manual (§ 2.11) describe the six remappable functions, export, import and reset.

What to do

1. Open KeyRemap from the apps.
2. Select the key to change, choose its new function and enable it.
3. Check that the remapping is enabled.
4. To copy the settings to other mobile computers: menu, Export (keys_config.txt file in the file manager), then Import on the target mobile computer.
5. To cancel all remappings: menu, Reset all settings.

Sources: 2.11 KeyRemap (opens in a new window) – HT730 (29 keys) User's Manual V2.1 · 2.11 KeyRemap (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).

Short answer: Prepare a script in the StageGO web editor, generate its barcodes or the script file, then open StageGO on the mobile computer and scan all the barcodes. The mobile computer then configures itself.

Likely cause

The HT730 manual (§ 3.4) presents StageGO as the Unitech configuration tool intended for administrators.

What to do

1. Create the configuration script in the StageGO web editor.
2. Download the script file or generate the barcodes that represent the whole script, then print them.
3. On the mobile computer, open StageGO from the apps.
4. Scan all the printed barcodes, or load the script file: the mobile computer applies the configuration; StageGO can also be set up for automatic one-click configuration.

Sources: 3.4 StageGO (opens in a new window) – HT730 (29 keys) User's Manual V2.1 · 3.4 StageGO (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).

Short answer: Perform a hard reset: hold down the Power button for about 10 seconds until it shuts down, then press Power again to turn the mobile computer back on.

Likely cause

The HT730 manual (§ 2.9, Performing a Hardware Reset) provides this procedure for when the mobile computer freezes and no longer responds to the buttons or to taps on the screen. The HT730 Plus manual describes the same procedure.

What to do

1. Hold down the Power button for about 10 seconds: the system shuts down.
2. Press Power again to turn the mobile computer back on.
3. If it is still frozen, the next procedures are the factory reset or the Recovery menu, which erase the data.

Sources: 2.9 Performing a Hardware Reset (opens in a new window) – HT730 (29 keys) User's Manual V2.1 · 2.9 Performing a Hardware Reset (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).

Short answer: Hold down the Power button and the P1 key together for about 15 seconds, until the Android logo appears. The Android Recovery menu is displayed; its “wipe data/factory reset” option resets the mobile computer and erases the data.

Likely cause

The Unitech note “HT730 How to goes to Android Recovery Menu”, cited by the HT730 FAQ, describes how to access the Recovery menu using the keys.

Caution: The wipe data/factory reset option erases the data on the mobile computer.

What to do

1. Hold down Power and P1 together for about 15 seconds.
2. Release them when the Android logo appears: the Android Recovery menu is displayed.
3. To reset, select wipe data/factory reset.

Procedure documented for the HT730; the Unitech note does not mention the HT730 Plus.

Sources: HT730 How to goes to Android Recovery Menu (opens in a new window) – Unitech technical note (linked from the HT730 FAQ) · OS – Android recovery mode with hardware keys (opens in a new window) – HT730 FAQ (Unitech) (official documentation).

Short answer: Turn on Wi-Fi, open Settings, System, Advanced, System updates, tap “DOWNLOAD AND INSTALL” then “Apply update”. The Unitech procedure ends with a factory reset, which erases the data.

Likely cause

The note “HT730 O.S Update Instructions: OTA” describes the online update: check the build number, update, reset, check again.

Caution: The reset included in the procedure erases all data: back it up before you start.

What to do

1. Note the current version: Settings > About phone > Build number.
2. Turn on Wi-Fi.
3. Open Settings > System > Advanced > System updates, tap DOWNLOAD AND INSTALL, then Apply update, and wait.
4. Then reset the mobile computer: Settings > System > Advanced > Reset options > Erase all data (factory reset), then confirm with Erase all data.
5. Check the new build number in About phone.

The Unitech update notes concern the HT730. For the HT730 Plus, the manual only presents the Software Update app, which updates the Unitech apps (Normal, Auto and Silent modes).

Sources: HT730 O.S Update Instructions: OTA (opens in a new window) – Unitech technical note (linked from the HT730 FAQ) · 3.3 Software Update (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).

Short answer: Copy the system update file to a microSD card, insert it with the mobile computer turned off, then open System updates and select the file from the three-dot menu. Tap “Apply update”, then reset the mobile computer as Unitech instructs.

Likely cause

The note “HT730 O.S Update Instructions: SD Card” describes updating the system from an SD card.

Caution: Turn off the mobile computer before inserting or removing a card. The final reset erases all data.

What to do

1. Copy the system update file to a microSD card.
2. With the mobile computer turned off, remove the cover and the battery: the microSD slot is in the battery compartment. Push the holder up to unlock it, insert the card, close it and lock it.
3. Refit the battery and the cover, turn on the mobile computer and note the version: Settings > About phone > Build number.
4. Open Settings > System > Advanced > System updates, tap the three-dot menu at the top right, choose the OTA file, then Recent and the SD card.
5. Select the file, tap Apply update and wait.
6. Reset: Settings > System > Advanced > Reset options > Erase all data (factory reset), then check the build number.

Sources: HT730 O.S Update Instructions: SD Card (opens in a new window) – Unitech technical note (linked from the HT730 FAQ) · 1.4.6 Using the Micro SD / Nano SIM Card (opens in a new window) – HT730 (29 keys) User's Manual V2.1 (official documentation).

Short answer: This is not a fault: according to Unitech, the HT730 Plus Power button launches the digital assistant by default. To display the power menu, first press the blue key (29- or 47-key keypad) or the yellow key (38 keys), then Power and Volume up.

Likely cause

The Unitech article “How to Access the Power Menu When the Power Button Opens Digital Assistant on HT730 Plus” explains that the Power button is set by default to launch the assistant, which can get in the way of restarting, on-site troubleshooting or shutting down for maintenance.

What to do

1. 29-key keypad: press the blue key, then Power + Volume up.
2. 38-key keypad: press the yellow key, then Power + Volume up.
3. 47-key keypad: press the blue key, then Power + Volume up.
4. To restore the power menu permanently, Unitech suggests changing the system settings or scanning a StageGO QR code that applies the setting; the details are in the guide attached to the Unitech article.

Applies to the HT730 Plus. The visual guide attached to the article could not be read: only the key combinations are given here.

Source: How to Access the Power Menu When the Power Button Opens Digital Assistant on HT730 Plus (opens in a new window) – Unitech FAQ Corner (official documentation).

Short answer: Switch the touchscreen to glove mode: Settings, Accessibility, Touch Pad Sensitivity, Glove mode. This is the answer in the Unitech FAQ for stylus part number 1979-900003G.

Likely cause

The HT730 FAQ (Accessory section) states that the 1979-900003G stylus requires switching from finger mode to glove mode.

What to do

1. Open Settings > Accessibility > Touch Pad Sensitivity.
2. Select Glove mode.
3. Test the stylus on the screen.

Source: Accessory – stylus 1979-900003G (opens in a new window) – HT730 FAQ (Unitech) (official documentation).

Short answer: This is the default function of the P1 key: it shows or hides the virtual keyboard (SIP) when an input field is active. To disable it, open KeyRemap, tap PROG_1 (296), then Action, and choose UNKNOWN.

Likely cause

The quick start guide, the HT730 Plus manual and the HT730 FAQ describe this role of the P1 key and how to disable it.

What to do

1. In an input field, press P1 to show the virtual keyboard, and press it again to hide it.
2. To remove this function: open KeyRemap, tap PROG_1(296), then Action.
3. Choose UNKNOWN.

Sources: Keypad (opens in a new window) – HT730 Quick Start Guide (29 Keys) V1.6 · Software – bringing up the soft keypad (opens in a new window) – HT730 FAQ (Unitech) · 1.3 Keypad Definition (opens in a new window) – HT730 Plus (29 keys) User Manual V1.3 (official documentation).