[Samsung Galaxy A70 ROMs, Kernels, Recoveries, & Ot] Grarak:
LineageOS is a free, community built, aftermarket firmware distribution of Android 9 (Pie), which is designed to increase performance and reliability over stock Android for your device.

LineageOS is based on the Android Open Source Project with extra contributions from many people within the Android community. It can be used without any need to have any Google application installed. Linked below is a package that has come from another Android project that restore the Google parts. LineageOS does still include various hardware-specific code, which is also slowly being open-sourced anyway.

All the source code for LineageOS is available in the LineageOS Github repo. And if you would like to contribute to LineageOS, please visit out Gerrit Code Review. You can also view the Changelog for a full list of changes & features.

Instructions

Go to https://xdaforums.com/galaxy-a70/development/recovery-twrp-galaxy-a70-t3955984 and install TWRP (always use the latest version)

Download the latest build and gapps

Reboot to recovery

(Optional) Create backup

Flash the latest build and gapps

(Optional: If you are already on lineage then you can dirty flash) Format data (yes format not just wipe)

Reboot

Downloads

https://github.com/Grarak/android_device_samsung_a70q/releases (Choose lineage-16.0, do not download pre-release, includes changelog)

Root addon : https://download.lineageos.org/extras

Google Apps : https://wiki.lineageos.org/gapps.html

Working

Everything, but

Known issues

VoLTE/VoWifi not working

Camera only shows up to 8MP

NFC is enabled on all models, even on the ones without it (please report device model)

Dualsim is enabled on all models, even on the ones without it (please report device model)

Screen flickering when using fingerprint (That's normal and how optical fingerprint sensors work. Flickering doesn't happen on stock I know, but that's due to poor UI implement from lineage site)

Reporting Bugs

DO NOT Report bugs if you're running a custom kernel or you installed Xposed

Grab a logcat right after the problem has occurred. (Please include at least a few pages of the log, not just the last few lines, unless you know what you're doing.)

If it is a random reboot, grab /proc/last_kmsg. (Do not bother getting a logcat unless you can get it just before the reboot. A logcat after a reboot is useless)

If the problem disappears after running "setenforce 0" from a root shell, grab /data/misc/audit/audit.log

Remember to provide as much info as possible. The more info you provide, the more likely that the bug will be solved. Please also do not report known issues. Any bug not reported in the bug report format below may be ignored.

What is your--
LineageOS version:
LineageOS Download url:
Gapps version:
Firmware version:
Model number:

Did you--
wipe:
restore with titanium backup:
reboot after having the issue:

Are you using--
a task killer:
a non-stock kernel:
other modifications:

Provide any additional information (observations/frequency of problem/last version it worked on/etc) as needed:

Sources

https://github.com/Grarak/android_device_samsung_a70q

https://github.com/Grarak/android_kernel_samsung_a70q

https://github.com/Grarak/proprietary_vendor_samsung

https://github.com/Grarak/android_frameworks_opt_telephony

https://github.com/Grarak/android_vendor_qcom_opensource_interfaces

https://github.com/Grarak/android_hardware_qcom_fm

https://github.com/Grarak/android_hardware_qcom_audio

Use this manifest if you are lazy: https://pastebin.com/tpdpLa7f

XDA:DevDB Information

LineageOS 16.0, ROM for the Samsung Galaxy A70

Contributors

Grarak

Source Code: https://github.com/grarak

ROM OS Version: 9.x Pie

ROM Kernel: Linux 4.x

Based On: Lineage

Version Information

Status: Stable

Created 2019-09-18

Last Updated 2019-10-23