Samsung galaxy s3 neo is not worst mobile. because I am using this last one years. If you compare with HTC mobiles then this is best mobile I am tell this statement because I am already used HTC.
In last one year I am facing only one time charger issue, so then buy new Charger and still its work properly.
this phone battery backup not VERY good but yes if you are normal user then its enough for 24 hours but if you using internet or Games most of time then you need to charge after 8 to 10 hours. .
Honestly speaking so I am not facing hanging issue in this mobile still as HTC other
I will recommend you If you are normal mobile user, but if are game lover on 24/7 internet user then dont buy because
you will face battery issue .
Otherwise this mobile is very cool as camera or processing speed wise.
Design wise very attractive and light weight.
So if u dont want buy chines kind mobile then is very pretty reasonable price mobile.