Thanks.
I don’t think i got that, since i succeed to install back Android 8.0 with a working SIM detection.
LineageOS had the same problem as /e/.
I tried to save a backup but it didn’t worked (problems about mounting some things…).
The phone is my girlfriend’s. I used for her all i learned with /e/ : F-Droid, Yalp, Signal and so on. To limit Google presence. If you have trouble getting back Android, i succeed with the lastest version of Odin and a firmware from Sammobile.