Samsung S9 recovery

Hey guys,
I recently woke up to my phone being booted in recovery mode and telling me the message “Too less storage to load android system”. This was caused because of my signal backup being too big for my phone and overwriting critical storage for the system. This means that I cannot get past my lockscreen. I have tried with ADB communication to delete unnecessery files to free up space. However I could not access /data on my phone. After trying that I installed TWRP on my phone to try and use the integrated file manager in it and delete files through that. However I could also not access and mount /data through TWRP. I read somewhere that TWRP should ask you for your device PIN before accessing user files. I wasn’t asked for my PIN. Could that be the problem? Am I doing something wrong that I cannot acces /data? Also going into the phone and activating USB communication is also not an option, because it shuts off after 10 seconds.

Regain your privacy! Adopt /e/OS the deGoogled mobile OS and online servicesphone

Hi @Finn welcome to the /e/ forum.

A forum Search for userdata or Signal backup will get more hits than you need, but users seem to have found this overfull userdata particularly hard on samsung-galaxy.