Frequently Asked Questions (FAQ)

Question 1 - Does dragging and dropping work on my Windows 10 or Windows 11 computer?
Answer 1 - No it does not and it is a known issue on the IoT Developer Kit. T-Mobile is actively working on a fix to this issue.

Question 2 - How do I put my kit into airplane mode?
Answer 2 - Please follow the instructions below. Note that your kit's SDK has to be at version 1.14.0 or greater in order for these commands to work.
- To put your kit in airplane mode, enter tmo pm suspend murata,1sc at serial app command line.
- To leave airplane mode enter tmo pm resume murata,1sc at serial app command line.
- To shutdown your kit enter tmo sys_pm fulloff at serial app command line.
- To leave shutdown mode press the reset button on the kit.

Question 4 - Where can I find the code for the SDK?
Answer 4 - You can find the code for the SDK at https://github.com/tmobile/DevEdge-IoTDevKit-ZephyrSDK.

Question 5 - Where can I find the device binaries?
Answer 5 - The device binaries, for the most part, are embedded within the Zephyr RTOS. However, there is a repository found here https://github.com/tmobile/DevEdge-IoTDevKit-Binaries.

Question 6 - Are there other things that I can do besides turn on the LED and buzzer?
Answer 6 - Yes there are. You can turn the kit on and off and watch the DevEdge IoT App > Power section data change. In addition, you can shake the IoT Developer Kit and observe the data change in the DevEdge IoT App > Motion section.

Question 7 - How do I update the reporting / polling interval on the iPhone DevEdge IoT mobile app?
Answer 7 - The polling interval's default is set to every other second. To change this value, go to your mobile device, Settings, search for "DevEdge IoT". Tap on "DevEdge IoT" then tap on "Poll for Reading Every". Select a poll value then tap back.

Question 8 - Where can I find information about the file system shell?
Answer 8 - You can find information on the file system shell on Zephyr's website: https://docs.zephyrproject.org/latest/services/file_system/index.html.

Question 9 - How do I connect to Wi-Fi?
Answer 9 - Wi-Fi connection is done at the tmo_shell / CLI level. Please read the document Interacting with the Kit at CLI via the tmo_shell to learn more.

Question 10 - I am getting a "Connection request failed (8)" message when I try to connect to Wi-Fi. What does this mean?
Answer 10 - It means that your password is not valid. Please check your password and try connecting to your Wi-Fi network again.

Question 11 - How do I access the modem CLI?
Answer 11 - Please follow the instructions below.
1. Plug in your USB-A to USB-C cable like in the screenshot below. The Modem USB-C Debug port must be plugged into your computer using your USB-A to USB-C cable.
2. Open your serial app. For demonstration purposes we will use Serial on a Mac.
3. Select the port that is associated with your modem then click Open.
4. Update the speed / baud rate for this port to 115200 under Terminal > Settings > Line Settings > Baud Rate then click OK.
5. Press Enter on your keyboard. The command line prompt for your modem appears.
6. Type help -a then press Enter on your keyboard. This displays all the commands available for the modem.
7. Type any command then press Enter on your keyboard to see its subcommands.

Question 14 - Can I try inserting a battery into the battery connector of the kit?
Answer 14 - Yes, however, it may or may not work. In addition, the battery is a bit too big for its britches and may pop out after insertion.

Question 15 - Are there any other issues with the battery that I should know about?
Answer 15 - The battery connector may come off of the board if you lift too hard to remove the battery. This is a known issue and we are working on it.

Question 16 - I cannot find my 8-digit access code for the web app in the box? Is there another way to find this access code?
Answer 16 - Yes there is. At serial app CLI enter fs read /tmo/aws_session.txt. The output should provide you your 8-digit code.