[Samsung Galaxy A71 ROMs, Kernels, Recoveries, & Ot] haky 86:
LineageOS is a free, community built, aftermarket firmware distribution of Android 14.0, 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.

/*
* Your warranty is now void.
*
* I am not responsible for bricked devices, dead SD cards,
* thermonuclear war, or you getting fired because the alarm app failed. Please
* do some research if you have any concerns about features included in this ROM
* before flashing it! YOU are choosing to make these modifications, and if
* you point the finger at me for messing up your device, I will laugh at you.
*/

DEVICES:

Samsung Galaxy A71 4G SM-A715.

Do not flash on Exynos models.

Do not flash on your phone, if you don't have a computer also.

NOTE: LineageOS 21 still under developments, so don't be mad if some features or translations are missed.

GPL compliance :

Deviec tree: https://github.com/a71-devs/android_device_samsung_a71.

Kernel: https://github.com/a71-devs/android_kernel_samsung_a71.

Vendor: https://github.com/a71-devs/android_vendor_samsung_a71.

REQUIREMENTS:

Make sure to run the latest OneUI 5.1, custom firmware/ports are not supported.

Unlocked bootloader, checkout YouTube/XDA about unlocking your device!.

Install Custom Recovery on A71:

Download the latest recovery.

Follow this guide (its for a different Samsung device, but the steps are similar to our phone) to flash the .tar archive using ODIN.

Install LineageOS from Recovery:

Download the latest LineageOS installation package that you would like to install.

(Optionally): If you want to install Google Apps add-on package (use the arm64 architecture), you can download it from here.

If you are not in recovery, reboot into recovery:

With the device powered off and connected to the USB port, hold Volume Up + Power.

Now tap Factory Reset, then Format data / factory reset and continue with the formatting process. This will remove encryption and delete all files stored in the internal storage, as well as format your cache partition (if you have one).

Return to the main menu.

Sideload the LineageOS .zip package but do not reboot before you read/followed the rest of the instructions!

On the device, select “Apply Update”, then “Apply from ADB” to begin sideload.

On the host machine, sideload the package using: adb sideload filename.zip.

Bugs

Flashlight DIM Level, currently we have only 1.

Screen OFF FOD, not working properly (due to sec_ts touchscreen driver impl on kernel source).

VoLTE/VoWIFI.

Downloads:

01/18/2024:

Initial beta release, based on Android 14.0.

Security Patches: Jan 2024.

lineage-21.0-20240118-UNOFFICIAL-a71.zip.

Recovery: lineage-21.0-20240118-UNOFFICIAL-a71.tar.

02/10/2024:

Include SMS fix (credits: Linux4 & Simon1511).

Increase audio volume.

Increase dynamic partitions size.

Switch to AIDL fingerprint HAL.

Enable usage of dex2oat64.

Override low latency capture duration.

Simplify AVB flag logic.

Remove CONFIG_LOCALVERSION flags on kernel, to pass integrity fix.

lineage-21.0-20240210-UNOFFICIAL-a71.zip.

Recovery: lineage-21.0-20240118-UNOFFICIAL-a71.tar.

02/15/2024:

Fix 2nd fingerprint deletion after reboot | cc: Linux4.

lineage-21.0-20240215-UNOFFICIAL-a71.zip.

Recovery: lineage-21.0-20240215-UNOFFICIAL-a71.tar.

Security Patches: Feb 2024.

Sync the latest source of LineageOS.

04/03/2024:

Disable some charging stuff in the kernel which reduce the overheating a bit.

Drop fingerprint swipe gesture from overlays.

Enable Overlay FS stuff.

Fix Clock Padding.

Fix MTP issue: cc: Linux4.

Update everything to A715FXXSBDXB1.

Update to QPR2 changes.

Upstream kernel with the latest BPF backports.

Security Patches Level: March 2024.

lineage-21.0-20240402-UNOFFICIAL-a71.zip.

Recovery: lineage-21.0-20240402-UNOFFICIAL-a71.tar.

06-04-2024:

Fix cpu frequency statistics.

Fix fastcharging: now it shows "charging rapidly", tested and confirmed.

Fix NFC TAGS.

Reserve additional space on product, to flash full gapps.

Switch to AIDL light hal.

Sync the LineageOS source with the latest sources.

Security Patches Level: April 2024.

lineage-21.0-20240406-UNOFFICIAL-a71.zip

Recovery: lineage-21.0-20240402-UNOFFICIAL-a71.tar .

20-04-2024:

Add more notification icons on AOD..

Fix bluetooth calls issues using buds, I tested on my Xiaomi Redmi Buds 4 Lite at least with normal calls.

Include fixes to allow flashing full gapps.

Import ALL sensors permissions from stock.

Import Xiaomi Gauguin's Audio Policy Configuration that helped to fix bluetooth issues and the volume quality in general.

Switch to hardware/samsung's libperfmgr which helped to reduce the heat and might even drains.

Sync the LineageOS source with the latest sources.

Security Patches Level: April 2024.

lineage-21.0-20240420-UNOFFICIAL-a71.zip.

Recovery: recovery-21.0-20240420-UNOFFICIAL-a71.tar .

07-05-2024:

Inclue VoIP and normal calls fixes via bluetooth.

Sync the LineageOS source with the latest changes.

Security Patches Level: April 2024.

lineage-21.0-20240506-UNOFFICIAL-a71.zip.

Recovery: recovery-21.0-20240420-UNOFFICIAL-a71.tar .

23-06-2024:

Drop QTI thermal hal, it cause thermal throttling with Aperture app apperently.

Downsize /system partition to 2gb, due to QPR3 changes [P.S: May Full gapps can't be installed this time until I found a solution for this issue, so I soggest to use Pico GAPPS].

Fix VoIP and normal calls with/without earphones.

Note: this is a signed build, needed to pass SafetyNET and PIF.

Sync the LineageOS source with the latest changes.

Security Patches Level: June 2024.

lineage-21.0-20240622-UNOFFICIAL-a71-signed.zip.

Recovery: recovery-21.0-20240622-UNOFFICIAL-a71.tar.

02-07-2024:

Fix UDFPS ScreenOff long press [You must enable long press fingerprint option, check lock screen settings], with/without AOD (Always on Display).

Introduce /system_ext partition, let's separate it from /system to reserve more space [it requires to flash new recovery to use it].

Note: I didn't include the torch flashlight dim impl due to not working yet, I'll focus on this later.

Security Patches Level: June 2024.

lineage-21.0-20240702-UNOFFICIAL-a71-signed.zip.

Recovery: recovery-21.0-20240702-UNOFFICIAL-a71.tar.

22-07-2024:

Fix taking screenshot issue.

Fix all ril issues.

Switch to AIDL Health HAL.

Switch symlinks to common qcom-caf.

Security Patches Level: July 2024

lineage-21.0-20240722-UNOFFICIAL-a71-signed.zip.

recovery: recovery-21.0-20240722-UNOFFICIAL-a71.tar.

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 /sys/fs/pstore/console-ramoops and /sys/fs/pstore/dmesg-ramoops-0. (Do not bother getting a logcat unless you can get it just before the reboot. A logcat after a reboot is useless)

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:

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:

Credits:

@Simon1511 for his works on Samsung QCOM devices.