Question Will toggling the "OEM Unlocking" switch erase all data?

[Ar Rakin]

My friend has a realme 9i device and I want to know - will toggling the "OEM Unlocking" switch in the developer options erase all data in the phone?

 

[Etrius vanRandr]

My friend has a realme 9i device and I want to know - will toggling the "OEM Unlocking" switch in the developer options erase all data in the phone?

no.

OEM unlocking is for unlocking the bootloader, which if you're doing anything with, you'll be wiping the phone anyways.

You can do a full backup with ADB.

https://riptutorial.com/android/example/11498/backup