SIM & internet tweaks
Turn off the second SIM
If you own a dual-SIM version of 8110 but never need another SIM card, you can switch the phone to a single-SIM mode to conserve some battery life. To do this, run the following commands:
After reboot, the phone will completely start acting as a single-SIM model.
To change the settings back, you'll need to run:
If the data transfer settings still cannot be restored to the second SIM, you might want to run the adb shell setprop persist.moz.ril.1.network_types gsm,wcdma,lte command again and reboot or perform a factory reset.
Enable networks for both SIMs
By default, Nokia 8110 4G allows you to only select 3G or 4G network for the SIM that has data transfer enabled, other being always 2G. To enable selection of all network types for both SIMs, issue the following commands:
After reboot, you should be able to select any combination of network types for both SIMs in the "Mobile Network & Data" settings submenu.
Internet Faster Tweak
This is an old tweak for Android that works on KaiOS too. Add these lines in your list using these commands from the shell:
Now your internet surfing is faster!