Lineage14120180419unofficialgtel3g Fix //top\\ Page

In TWRP, go to Wipe > Advanced Wipe and select: System, Data, Cache, and Dalvik .

If you are looking for this specific "unofficial" build, you are likely trying to breathe new life into an aging tablet while maintaining the stability of the 3G radio and system performance. Understanding the "gtel3g" Build

Once booted, the can be further "fixed" for better performance: lineage14120180419unofficialgtel3g fix

Immediately after the ROM, flash the GApps zip. Do not reboot between these steps.

Since these are unofficial builds, always keep a copy of your stock firmware handy via Odin in case you need to revert. In TWRP, go to Wipe > Advanced Wipe

Update your TWRP recovery to the latest version available for the SM-T531. If it persists, you may need to edit the updater-script inside the ROM zip to remove the assert lines. 2. RIL (Radio Interface Layer) Fix

This guide provides a comprehensive walkthrough for installing and optimizing the build dated 2018-04-19 for the Samsung Galaxy Tab 4 10.1 (3G variant, codename: gtel3g) . Do not reboot between these steps

If you get a "Status 7" error in recovery, it’s usually because the script doesn't recognize your device model name.

In some 2018 builds, the 3G data connection might show "No Service" despite the SIM being recognized.