[Galaxy Tab S Android Development] Mrodfr:
I have installed LineageOS20 on my ST800 WIFI version tablet with, as original system,

Darkexistence 7.2.1 last version and with TWRP 3.7.0 9.0.

DATAS:

1. lineage-20.0-20230426-UNOFFICIAL-chagalllte.zip

2. NikGapps-core-arm64-12-20230621-signed.zip (on NikGapps-S drawer).

ERROR 1 : with same data but for android 13.

3. Magisk v26.4.apk (Installed later).

Good METHOD:

1. Boot to recovery for TWRP (power and vol+ and HOME together).

2. Clean flash : Wipe System, Wipe cache, Wipe dalvik cache, wipe datas

3. Install Lineage-20 + NikGapps.

4. Boot to system.

5. Lineage start and Lineage ROM settings done (without fingerprint) without problems.

6. Boot to recovery for TWRP and install Magisk V26.4.

7. Boot to system and update Magisk V26.4 (as requested by Magisk V26.4).

9. Boot to system.

- If you install Magisk V26.4 as an apk on the system and reboot to the system for the update, the update won't work (update magisk direct mode (recommended) crash with a page with code on it and updated gadget GHOSTED).

- if you flash in dirty mode, GPS, for example, won't work.

DON'T WORK: ST-800 WIFI

- Internet traffic gadget inside/outside (on the main android settings) allways show 0 Mb in and out.

- Light of the lower two gadgets work verry strangely and not follow allways the settings.

- Sound is verry low for movies (tested with x-plore tool on googleplay).

- Ressource mini monitor pro: Tool to show cpu % and mhz allways on screen.

* 7.1.2 and idle: CPU: 2-3% 250 mhz.

* 13 and idle: CPU :allways 4 % or 13% or 21% at 250 mhz as minimum value.

Problem here to give good minimal CPU value (minimal fixed to 4 or 13 or 21% (But 3CTOOLBOX show more minimal cpu used value).

PHOTO-VIDEO: (Basic app but work)

- Photo work fine.

- Video work fine (just one short attempt) without sound.

Save on Google photo as default (not locally ???).

3CTOOLBOX BATTERY:

3CTOOLBOX save datas of battery allways with tablet run or sleep/Idle mode.

7.1.2 and sleep/idle mode : around 30 ma used each 30 minutes.

13 and sleep/idle mode: around 30 ma used each 30 minutes.

7.1.2 and 13 have

THE SAME BATTERY POWER CONSUMPTION

during idle

but on 7.1.2, most all functions I have used was disabled. on 13, all functions are enabled. Verry Good.

3CTOOLBOX BATTERY CHARGING:

Charge well at good speed, like 7.1.2. 3h for 20% to 100%. Max 1725 ma

3CTOOLBOX BACKUP SPEED: on SD card:

* 7.1.2 : each app to backup never less than 20 seconds and sometime verry long.

* 13 : just 2,3 seconds for each app. Incredibly increased speed to backup !!!.

SURFING:

Surfing and rendering with chrome is far far away better with much more speed than 7.1.2. Incredible.

Unfortunately, there are site than : capital.fr who render the site allways with cpu:100% 1900mhz and the tablet crash.

No problem at all on 7.1.2 with normal CPU Usage.

The problem is caused by the ads and banner who take look time to be showed on the internet page.

The problem is caused by the method used to render animated picture, more power hungry on 13 than 7.1.2.

If you install Adaway, the ads and banner are removed and the site is rendered verry quickly (and you save battery power and have much more less crash during surfing to the net, maybe none).

GOOGLE PLAY GFX EXAMPLE:

Google play open, with ressource monitor pro running show me:

CPU 100% 1900 mhz : with a banner animated.

CPU 13% 250 mhz : If I scroll vertically a little to remove the animated banner to screen.

If I show allways the animated banner, sure the tablet will crash sooner or later.

The tablet use too much power for rendering a simple animated banner.

LAST WORD:

I don't regret made this jump to 7.1.2 to 13. You MUST do the update, It's my advice.

I really hope to see this ROM updated soon (for recent patch and maybe for better improvment since this report).

------> I'm ready to test android 14 ROM !!.

GREAT ROM, Thousand thanks to the developper, ROM_gamer987

!!

Hello to France and Good Xmas !

ADDONS: UPDATE : 02/01/2024

- SELINUX is not activated on this ROM that mean Play integrity Magisk module for magisk

just pass Basic integrity only. In fact, the developper menu on Playstore app do that also.

- No Fingerprint support (also on galaxy tab S2) mean no Play integrity support in 2025.