Redmi not 4 is a best mobile for business or home because it has bst battery backup and bst performance. In this phine 2ghz processor or ddr3 powerfull ram . I used this phone from 6 mnth it give me a great speed no hang problemm because it has 4gb ram and powerfull processor.it has very best camera and music quality .in this phone 13and 5 mp camera . In this phone there is no frnt flashbut camera is very best .in this phone 2 4g sim slots and 4g speed is very superfast and volte is active no lte volte enables phone.