SimOperatorLocationChanger with Magisk/KernelSU.
This module will start a cron job to constantly update these properties using resetprop:
[gsm.sim.operator.numeric]: [23402]
[gsm.sim.operator.iso-country]: [gb]
[gsm.sim.operator.alpha]: [O2]
[gsm.operator.numeric]: [23402]
[gsm.operator.iso-country]: [gb]
[gsm.operator.alpha]: [O2]
Also on first reboot after installation, data of the following packages will be cleared:
com.google.android.gms
com.google.android.gsf
com.android.vending