If you are rooted, use an app like Kernel Adiutor to change the CPU governor to powersave or interactive . Fix 4: Improving Network/3G Connectivity If your gtel3g is struggling with network connectivity:
Root / Magisk issues
These issues occur because the 20180419 build lacks updated proprietary blobs and correct hardware abstraction layer (HAL) configurations for the Spreadtrum chipset inside the SM-T561. Prerequisites Before Fixing lineage14120180419unofficialgtel3g fix
Tap on the fix ZIP file (e.g., lineage14120180419unofficialgtel3g-fix.zip ). Swipe the blue slider at the bottom to . If you are rooted, use an app like