[G4 Android Development] 1captainjacknotsparrow1:
So I did install it on my LG G4 H815 (officially unlocked) and well....I mean thanks for trying @steadfasterX and I mean it, but its definitely not stable.

So first, how I installed it

(before that I had LineageOS16 (maybe also from xda, dont remember) and TWRP from the official website but with an older version of TWRP because I was too lazy to update at every release) :

a) Installed latest Twrp preview "twrp-3.5.2_9-PREVIEW-275_g4.img"

b) Installed bootloader "h815_20p_bootloader_20p_modem_TWRP-flashable.zip"

c) Did Full Clean: WIPE -> Advanced -> select: System + Cache and then WIPE -> "FORMAT data", then reboot directly into recovery which is twrp

d) Well nobody said something about lineageos-image (lineage-18.1-20220523-UNOFFICIAL-h815) being on a sd card, so first my lineageos-image was of course gone after "format data", but I got it onto my internal storage from my computer (usb) while being in twrp and then installed it

So now to the problems:

1) The first boot was actually very fast, but in the first menu, the start menu...later on...there was the setting for mobile connection. I tried to turn it on and then my screen froze like for 10-15 seconds. After the 10-15 seconds I could finally continue. Seems very buggy to me. Tried the switch again and it froze again for some seconds.

2) So after I got done with the start menu, I go into settings and see that 8,7gb are already used....is that normal or too much? There are no photos or videos on it. Just Twrp and Lineageos 18, without magisk or google crap.

3) In privacy settings, then "trust", I found SELinux to be deactivated and I can't turn it on? Without SELinux my phone is not very secure, right? So why is it deactivated?

4) Then in the settings of the caller-app (calls -> additional settings) everything ("caller id" and "call waiting") is greyed out and can't be selected. After 15-20 seconds of waiting a notification/loading box appears in the middle with "call setting" written in it and below in that box "reading settings". After additional 20-30 seconds the box disappears with all menu points ("caller id" and "call waiting") still being greyed out and not selectable. Long-story-short: It does not work.

5) In the caller-app settings for the voicemail (settings -> voicemail -> notification) directly under the phone icon is something written in russian....like what the hell?

6) In the same settings as in number 5 I also can't switch the "show notifications" thing or "default" to "silent", or change the "pop on screen" thing. Seems like this all also doesn't work.

7) In the battery settings there was written, that my 70% battery at 01:47 am is only gonna last to 04:15 am, so only 2 hours and 28 minutes for 70% battery?....so yeah something strange here too.

8) When I had something like 30-45% of battery-life (I don't remember exactly), I wanted to test the camera (video). I started the video and after some seconds I pushed the stop button and suddenly my phone restarts, not turns off completely, but restarts and with then having only 4% of battery-life left....like seconds after being at 30-45%. What the hell? And why restart and not complete shutdown?

After that I immediately plugged in my charging cable and tried it again. No restarting this time. So seems like a battery problem and less like a camera or camera-app problem. But I'm not the expert here. Whatever it was, it is a complete **** show.

9) Whats with the pin/password for the sim card coming late like 20-30 seconds after the normal phone pin/password? Why not immediately after the normal pin. Because I'm like already deep into settings or something and suddenly after 20-30 seconds the sim-card-pin/password question pops up. That seems very buggy to me.

10) This not being directly a real big problem, but when I try to turn the phone off, there is an emergency box in the end menu....can I somehow disable this box, so I don't accidentally call the emergency number?

thanks in advance