If you want phone which will have long lasting battery backup then Samsung galaxy m31 one will you right choice
It is long lasting battery backup Plus amulet display which will give you great experience off display and also camera is is excellent
if you charge your phone in the morning hundred percent then you will be able to use it at least one and half day or more than that and plus it is non Chinese phone
So you can buy it.
Then if you are searching for phone with good camera quality and best battery backup then you should move on Samsung galaxy M31