What is Custom Recovery?
If you use a third party to change the recovery environment on your Android phone, that’s called a Custom Recovery. It
> Does not change the operating system.
> Only changes the recovery environment.
> Will perform the same things as stock Android recovery.
> Custom Recovery also creates and restores device backups.
> Custom Recovery also allows users to install custom ROMs.
Technobezz Explains Custom Recovery
Custom recovery is only important for the users who are planning on flashing a custom ROM. Otherwise this installation does not make a difference. If you use your android device only for Apps and other phone services then Stock Recovery is enough for your Android phone. You don’t need to install Custom Recovery. But Custom Recovery is good for you if you need strong back up features on your Android phone. This installation does not causes the phone any harm, so if want it you can install Custom Recovery safely for your phone.