Nothing.like it.very very good phone in this price and amzing look camera is good but front camera is not satisfactory but amazing on this price.soMany features.Like auto data off.Auto schedulerBuilt in security and lag free functionAnd with infrared remote.You can contral any tv any thing.Sound quality also.Very good.And most important thing is battery .Battery is so good and with battery the phone is light weighted and very good battery backup.And loaded with amazing MIUI 8 that has alot features and many more.