Troubleshooting 4G functionality on Waveshare 4G HAT with Telstra data SIM

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1

Hello,

I’m having trouble getting the 4G functionality to work on this 4G HAT using my Telstra data SIM (which works normally in my iPhone)
GPS is working fine, but 4G doesn’t seem to be working at all.
I set it up following the steps on this video: https://www.youtube.com/watch?v=ABnwz-IYzqA

Below is a photo of how everything is connected in my setup.

image
image1920×1440 511 KB

Any ideas what I can do to troubleshoot this?

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2

Hey Kane,

Thanks for posting on the forum, welcome to the community. Here are some steps that you can go though to troubleshoot this HAT. Here’s the wiki for the SIM7600E-H by the way for anyone following along:

  1. Check you have the correct APN (Access Point Name) Settings: Confirm from Telstra what the correct APN settings are and that you have these set correctly on the 4G HAT. Incorrect APN settings are a very common cause of mobile data not working with these HATs

This is the AT command to set it, obviously you’ll want to change the APN to match the APN for your Telstra SIM. With some brands like Hologram that’re designed for IoT devices, these HATs detect it automatically off the SIM, although maybe it didn’t with yours?

AT+CGDCONT=1,"IP","CMNET" //Set APN

  1. Check the specific 4G band is supported by the HAT and antenna: The 4G HAT modules will be supporting certain frequency bands. In some cases, these module might not be compatible with the 4G band/frequency that Telstra is using specifically, although I doubt that is the problem in this case.

  2. Reseat the SIM (just because it is so easy to do it’s almost always worth doing so)

  3. Check the module status: commands such as AT+CREG? should return 0,1 or 0,5 which mean respectively “registered, home network” and “registered, roaming”

AT+CREG? //Query the network registration status, where the second parameter is 1, it means the registration has been successful
  1. If you have one available, probably also worth trying a SIM from another provider, just in case for one reason or another the Telstra SIM you’re using isn’t suitable
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