Freematics Forum

Hi,

I've just bought a one+ model B, and I can't get the mobile network to connect.

I've tried with 2 Aldi sims, both work for data (and calls and sms) in a phone handset.

I've updated the sim7600test sketch to use the APN "mdata.net.au", and I also upped the CONN_TIMEOUT to 20000 (I'm assuming that is ms)

Using the sim7600test sketch, I get the following output:

Init cellular module...SIM7600E-H OK
IMEI:XXXXXXXXXXXXXXXX
SIM Card OK
Registering on network...NO

Is there any further debugging I can do to figure out what is wrong?

Cheers

David

Do you have good 4G coverage in your area? Aldi uses Telstra network and if it fallback to 3G, it will be on a band that SIM7600E-H does not support. I suggest using a IOT sim card (like Hologram) which is able to roam across different operators' network. Or use Optus SIM card as Optus' network is fully supported by SIM7600E-H.

OK, according to my phone it wants to use 4G on band 28, which I think the modem doesn't support?
If I force the phone to 3G, it wants to use band 5, which I think the modem does support?

In fact, if I'm reading oztowers.com.au properly, telstra only uses 1 & 5 for 3G, both of which the modem supports?

Is there a way of locking the modem to 3G, or have I got something backwards?

Cheers

David

Yes it is possible to lock the cellular module to WCDMA.
Look at ClientSIM7600::setup() in FreematicsNetwork.cpp and uncomment the following line.