Troubleshooting

Newland MT93 troubleshooting: power, charging, scanning, reset

Match the symptom to the fix: no power, no charging, cold-weather charging, battery drain, scanning, freezes and Wi-Fi, plus restart and factory reset.

10 min Difficulty: Easy Updated: By SCANSHOP team
In this guide

    Most MT93 problems come down to the battery, charging temperature, the scanner settings or the network. Every fix below applies to the Standard Plus and the Pro. Check the LED at the top of the front first.

    Find your symptom

    What you see Likely cause Fix
    Black screen, device won't start Empty battery, sleep mode or an abnormal power loss Fix 1 →
    LED stays off on the charger Adapter not plugged in properly, or the cradle has no power Fix 2 →
    Charges slowly or stops charging outdoors or in a cold store Low-temperature charging protection Fix 3 →
    Red, flashing or battery empty within a shift Low battery, worn battery or settings that use a lot of power Fix 4 →
    Scan key does nothing, or no data in your app Scanning disabled, key not set as trigger, wrong output mode or barcode type off Fix 5 →
    Screen frozen, keys don't respond An app or the system has stopped responding Fix 6 →
    No Wi-Fi or mobile data Radio off, wrong saved settings or missing APN Fix 7 →

    Fixes

    1. MT93 won't switch onBlack screen after pressing Power

    CauseThe battery is empty, the device is asleep, or it did not restart after a sudden power loss.

    Fix

    1. Press Power briefly. If the MT93 was asleep, the screen wakes up.
    2. Connect the included adapter and cable and try to switch on while it charges. If the battery was completely empty, wait 15 minutes before you press Power.
    3. After a sudden power loss, remove the battery, put it back and switch on again. Newland describes this as resetting the terminal.
    4. If it still won't start after charging for a while, contact us.
    2. Battery doesn't chargeLED stays off while charging

    CauseThe adapter is not plugged in properly, or the charging cradle has no power.

    Fix

    1. Check that the adapter is pushed fully into the wall outlet and the cable into the MT93 or the cradle.
    2. Use only the Newland adapter and cable. Newland warns that other adapters can damage the device.
    3. For linked charging cradles, check that the set has its 19 V, 3.2 A power adapter.
    4. While charging, the LED is red. If it stays off with the correct adapter firmly connected, contact us.
    3. Charging stops in the coldSlow or no charging at low temperatures

    CauseBelow 0 °C the MT93 switches on charging protection and stops charging.

    Fix

    1. Move the device to a warmer room before you charge it.
    2. If it comes in from the cold, wait for condensation to dry before you use or charge it.
    3. For the longest battery life, Newland recommends charging between 0 and 30 °C.
    4. Battery runs down fastLow-battery warning early in the shift

    CauseThe battery was not fully charged, apps keep the device busy, or the battery is worn.

    Fix

    1. Charge fully. A flashing red LED means the battery is low.
    2. Restart the MT93 (Fix 6).
    3. In the scanner settings, open Symbologies, then the Advanced tab, tap DETAIL and set Power Plan to Power Saving. The built-in scanner then switches off after 3 seconds of inactivity, instead of 15 seconds with High-performance.
    4. Avoid letting the battery drop below 5 %; Newland warns that deep discharge causes permanent capacity loss.
    5. If runtime stays short, the battery is worn. Replace it with a Newland BTY95L battery.
    5. Scanner doesn't scanNo laser line, or no data in the app

    CauseScanning is disabled, the key is not set as a scan trigger, the output mode doesn't suit your app, the barcode type is switched off or the scan window is dirty.

    Fix

    1. Clean the scan window with a dry, soft cloth. Don't touch it with your fingers.
    2. Open Quick Settings, tap Scan and check that Enable scan is ticked.
    3. Open Scan Trigger and tick Left/Right SCAN key (and Stock SCAN key if you use a pistol grip).
    4. Scan on the Test tab. If it reads there but not in your app, change Output Mode to Simulate keystroke or Fill in EditText directly and tap into the text field before scanning.
    5. Check that the barcode type is ticked under Symbologies.
    6. Change the distance or angle. For 1D barcodes the laser line should be about 8 mm longer than the barcode; for 2D codes point the aimer at the centre and tilt the device a little.

    All settings are explained in the MT93 scanner settings guide.

    6. Device freezesScreen and keys don't respond

    CauseAn unreliable app or a sudden power loss has stopped the system.

    Fix

    1. If the screen still responds, hold Power until the menu appears and tap Restart.
    2. If it doesn't respond, press and hold Power for 10 seconds, then switch the MT93 on again.
    3. If it started after you installed an app, remove that app.
    4. If it keeps freezing, check for updates in the System Update app or contact us.
    7. No Wi-Fi or mobile dataData not sent, no network icon

    CauseThe radio is off, the saved settings are wrong or the APN is missing.

    Fix

    1. Swipe down from the top of the screen and check that airplane mode is off and Wi-Fi or mobile data is on.
    2. Forget the network under Saved networks in the Wi-Fi settings, then connect again with the correct password and security type.
    3. On a static IP network, check the address under Advanced options; it must match your router's address range.
    4. For mobile data, check the APN under Settings › Network & Internet › Mobile network › Advanced › Access Point Names with your operator's settings.

    Factory reset

    Use a factory reset only when nothing else helps. It deletes all apps, settings and data on the internal storage.

    1. Back up your data. Scanner settings can be saved with Backup Recovery in Quick Settings, see the scanner settings guide.
    2. Open Settings › System › Reset options.
    3. Tap Erase all data (factory reset), then Erase all data to confirm.
    Important

    A factory reset cannot be undone. If your company manages the MT93 with Ndevor or another management system, ask your IT team first, because the device may need to be enrolled again afterwards. The menu path above is from Newland's Android 13 user guide and can differ slightly after an Android 15 update.

    Still stuck? Contact us with the model and serial number. First-time setup is in the MT93 setup guide.

    Frequently asked questions

    How do I restart a frozen Newland MT93?

    Press and hold the Power key for 10 seconds, then switch the device on again. If the screen still responds, hold Power until the menu appears and tap Restart.

    How do I factory reset the Newland MT93?

    Open Settings, then System, Reset options, Erase all data (factory reset), and confirm with Erase all data. All data on the internal storage is deleted.

    Why does my MT93 not charge in the cold?

    Below 0 °C the MT93 stops charging to protect the battery. Move it to a warmer place and let any condensation dry first.

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    Newland MT93 Standard Plus Terminal (NLS-MT9300-W4-SS)531,59 €+VAT View product