Hi,
My pixel 3a drop the call after 3 or 4 rings or after 8 secondes maximum in a conversation.
Everything else works, MMS, internet...
I started with the right android version and the installation works perfectly with the installer.
I revert back to Android stock ROM to check and it's exactly the same.
I have the feeling that I mess up with the first downgrade to android 9 cause I tried with TWRP and made something wrong ( maybe with slot A/B ) and the phone didn't start at all, I finally done it very easily with Android flash tool through Chrome.
Now the installation of Ubuntu touch (with installer) and the android 9 works well ( done many time...) but same probleme.
In fastboot mode ( with android 9 ) I tried many command to check few things.
I manage to change the slot to boot it in A or B for example, but if I want to boot with TWRP in order to flash the recovery to install everything on both slot, I have the return command (bootloader) boot.img missing Cmdline or Osversion
when I try to do fastboot boot twrp.img
.
I know that it's nearly not related to UT but I didn't find any tips on XDA and there is more active users here with 3a.
Thanks in advance.
Tchan