From my experience Before buying an mobile phone just remember followings things in your mind .
1) Before buying an mobile phone just keep in mind that what is your choice buy your choice mobile phone but the mobile phone you choose compare it with all mobile phone like its RAM , battery features and many more things .
Dont buy a phone which is preffered buy the seller before buying an cell phone prepare at home what type of mobile phone you want but the mobile phone you choose has all the features latest features .like samsung mobile phone series is very good , lenovo , xiomi and mang more brands who launched their product .choose one of the best mobile and then buy . ok .buy high rated mobiles my final advice is that take a mobile phone you like but compare it with all fields . which is good for you.