I buy the xiaomi redmi 3s prime in his web.
There is most big issue in the phone is the its not working in 2G internet connection.
3g - 4g completely working is smoothly.
I call the customer care to xioame and I said this problem, they told me reset the phone.i can also check this reset system.
Then I requist to replace the piece.
When I replaced piece to compny, then I faced same problem in this problem is 2G internet is not working.