First of all to buy a mobile phone phone select the mobile through internet or through raferences .
Then search the mobile on internet about it’s
.Battery life
.Display
.Brand
.cost
.fetchers
.sencsor
.sim support
.operating system
.storage
.camera
.wireless connectivity
After all things search the mobile phone on ’MouthShut ’ app or side and check the customer review and rating.
Then go for a selection of mobile
Otherwise you fall in trouble in future.