I bought galaxy on max but after one month of use, I gave it to my younger brother because this phone can not handle heavy apps.
Memory: RAM is 4 gb which is Ok but internal memory is 32 GB which is lesser than other comoetitive smartphones which gives us 64 gb internal memory with 4 gb ram variant.
Sensors are working good but fingerprint recognition is quite slow. Camera quality is fine. UI is modified by samsung which os quite disturbing sometimes.
Hanging problem : Main disadvantage of this phone is the use of mediatek processor in it by samsung. It got hang when heavily used. So if you are a user who is seeking for a phone which can handle heavy apps, dont go for it.