There are usually 3 ways to recover the data of your iPhone according to different situations.

Data recovery from dead motherboard
This approach is mainly for those phones which are seriously damaged, without iCloud backup, can not turn on, or even with deformed motherboard,[Only registered & active users can see links.] Register or Log In

Data recovery with iCloud
This is mainly for the phones with iCloud backup.

Data recovery with software
This approach is for the phone in good conditions, but data is deleted carelessly.