OS 5.0.0.67, Redmi community port.
Internet is set to use SIM 1.
Roaming is disabled on SIM 2.
Network Mode - not set for SIM 2.
I have data+calls SIM 1 and second roaming SIM without any data bundle(2G ?). SFOS keep on sending 149bytes of GPRS data over second SIM every few hours, which cost me dearly.
How do i prevent/stop SFOS from sending GPRS data over this SIM ?.
On android, we have the option to set mobile data, calls and SMS for specific SIM slots.
I’m pretty sure this is possible by going through
Settings => Mobile Network and
Settings => SIM Cards
I currently have only 1 SIM in a 2 SIM phone, but afaics you can
tell it which SIM to use for mobile data
disallow/disable all sorts of things for the other SIM, up to the point of disabling automatic network selection and choosing an invalid network maybe?
had similar problem even with one sim, prepaid card just for receiving sms and i still got reports that i using mobile data even data was disabled. only 100% solution was to call provider and completely disable data…
If the affected SIM card always shows up as the same interface, maybe also try adding it to NetworkInterfaceBlacklist. But maybe that will disable telephony also?
Interesting hypothesis - but it seems unlikely that connman itself would get to use the interface when disabled.
A similar hypothesis would be the IPv6 assignment - where the network assigns you a prefix and you need to handshake the actual address. But even this i find a bit unlikely for an interface that is turned off. Though - on what level is it actually turned of? I.e. what does ifconfig say? (Hidden behind devel-su for some reason - censor ip addresses as desired).
Are you sure? It says in the docs that it will only look like there’s no internet, but it actually works.
Also, I cannot imagine it would automatically enable WLAN then. Sorry, I’m skeptical there.
BTW, commenting out is not the same as disabling. The software might fall back to some default value.
But it’s quite clear that OnlineCheckMode=none supersedes that anyhow, in this case.