Force Electron to 2G mode

[ScruffR]

Have you seen this thread?

3G Electron on 2G Networks

@rickkas7 I’m using your CellularHelper repo as a jumping off point for testing cellular connectivity however the part where I read what type of network I’ve connected to with CellularHelperEnvironmentCellData::postProcess() is confusing me. The band that this function is parsing is coming out as either DCS 1800 or GSM 900 , even though I am testing on a U-260 Electron. Note that I am using AT+UBANDSEL to successfully select the 850 and 1900 MHz bands as per: [ Modem::getBandAvailable ] = …

If this doesn't provide enough clues, you may want to look at the AT commands for the ublox module