Teltonika TMT250 Installation and user guide

https://wiki.teltonika-gps.com/view/How_to_debug_Teltonika_device_over_Android_smartphone
How to debug Teltonika device over Android
smartphone
General Technical Questions > How to debug Teltonika device over Android smartphone
Solution applies for these Teltonika devices
TMT250 | GH5200 | TST100 | TFT100
Pair and connect device
Bluetooth starts automatically when device is on. Take your mobile phone, go to Settings->Bluetooth
and turn it on. Scan for nearby devices, find the device in the list, distinguish the device by last IMEI
digits on device module. Press pair, wait until device asks to enter pairing password, type: "5555"
(as in the example on the figure). Paired device will show up in the paired device list. Download a
terminal for Bluetooth, e.g. "Serial Bluetooth Terminal", from Play Store/App store. Run app, click
Find->Connect to your paired device. Now we need to send a command to the device from Bluetooth
terminal, type: ".log:1"
Device will respond with "Log enabled" and the log will show up. Do not forget to save the log file to
mobile phone.
Device debug over Android smartphone
In order to pair the device with Android smartphone, make sure that BT radio is enabled (visible) in
device configuration. It can be checked via SMS command too:
"getparam 800"
The answer has to be "2", which means "Enabled and visible".

Scan for visible BT devices using your Android smartphone and connect to your device. Default
BT name is: "DeviceModel_last_7_imei_digits". Default PIN code is: "5555".

Download "Serial Bluetooth Terminal" application. Following link can be used:
https://play.google.com/store/apps/details?id=de.kai_morich.serial_bluetooth_terminal
Run "Serial Bluetooth Terminal", in menu press "Devices" and select paired the device.
To change the log saving folder, in the right upper corner press on 3 dots
symbol->Data->Info->Edit Folder->Edit Custom, then select your preferred saving folder, e.g.
"Documents", press Use this folder->Allow.

To start the logging, enter the command into terminal: ".log:1".
Wait ~10 minutes and press on 3 dots symbol->Data->Save. You will find the saved log file in
the previously selected folder, e.g. "Files/Documents", select log files, in "Share files via Email"
section select your preferred sharing method and then send these files to Teltonika support.
You can turn logging off again by entering the command ".log:0" into the terminal
Saving and sharing the log

Please note:
Unfortunately, it is not possible to perform debug the same way on iPhone, because there is no native SPP
Bluetooth profile support on iPhone.