B524 does not connect to the best cellular network


Yesterday I got my first B524 with the EtherSIM technology. Today I have time to test the module for the first time. The installation was easy as always - the B524 connects to the Cell Operator H3G by using LTE, the signal quality was 58% - everything works great.

Austria | 3 (Drei) => this in fact H3G - 58%
Austria | A1
Austria | T-Mobile

5 Minutes before I used an B523 on the same spot off my table and this one only connects to the Cell Operator A1 (H3G and T-Mobile are not supported) and with 90% of signal quality!

B524 should connect to the best Network, but it does not. I could not find any information regarding this observation.

  • How does the network selection really work?
  • Can I influence this behavior?

Thanks in advance for any help

The choice of operator is made by a combination of the SIM card and the cellular modem, and the manufacturers do not document exactly how it works. It’s more complicated than “best” because the SIM provider may impose a preference.

Unfortunately there’s no good way to configure the preference list.

Hi rickkas7!

Thanks so much for this information. Next week we start some tests and it’s important for me to know the details…

Have a nice Weekend