T-Mobile SIM working with old BR1 but not new BR1 ?

Product Discussion Pepwave MAX
1

I have approximately 10 Max BR1 mini’s.

All use T-Mobile 4G/LTE data only SIM’s
I have never had to use anything other than default settings in BR1 to connect to a cellular provider, either when I used Verizon 3G or when I switched to T-Mobile LTE.
My 8 older BR1’s work fine with these SIM’s

The two newest BR1’s that I’ve purchase will NOT work with these SIM’s no matter what I do.
These same two newest BR1’s WILL work with AT&T SIM’s borrowed from a mobile phone.

If I put any of the 10 T-Mobile SIM’s into a phone, they will connect with LTE without issue.

What’s going on with the 2 newer BR1’s ?

Here is the info on one of the newer ones that will not work with the newer T-Mobile SIM’s:
System Information
Router Name
MAX_BR1_7F06
Model
Pepwave MAX BR1 Mini
Product Code
MAX-BR1-MINI-LTE-US
Hardware Revision
1
Serial Number
XXXX-XXXX-7F06
Firmware
8.0.2 build 3612
PepVPN Version
8.0.0
Host Name
max-br1-7f06

2

I’d try updating to the latest firmware which I believe was needed for the 3G shutdown.
Also been a lot of changes with T-Mobile/Sprint merger that updated firmware may resolve.

3

Have you reached out to T-mobile to confirm the IMEI for the BR1s you are trying to use, match what is displayed in the billing system?

tmobile.png
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4
  • Modem Compatibility:
  • There might be a difference in the modem hardware or firmware between the older and newer BR1 models. This could affect compatibility with certain carrier networks, specifically T-Mobile in your case.
  • T-Mobile Network Changes:
  • T-Mobile might have implemented network changes that are incompatible with the newer BR1 models. This is less likely, as your older devices are working fine, but it’s worth considering.
  • SIM Card Profile Issues:
  • While you mentioned using default settings, there could be specific APN or network settings required by T-Mobile that the newer BR1s aren’t picking up correctly.
  • Hardware Defects:
  • There’s a possibility of a hardware issue with the newer BR1s, specifically related to their cellular modem.