High speed Internet use at low network places
1.First go to settings
2.then about phone
3.touch simultaneously on internal memory
4.uh would be able to entre mobile testing mode
5.now go to phone info. (which sim uh want to use high speed)

6.change the network type like cdma, wcdma, gsm only, LTE only etc
7.use high speed in low coverage area
#MI LOVE
#OFFICIAL
#MI INDIA