Hi vickys1038 as i told in the previous comment dat after selecting India and MTS click Save and then go to Advanced Settings and click the tick for Set the Dial Number, APN, Username and Password...

hi shubhamxsinghal i also bought TP MR3020 last week and m using MTS Mblaze Ultra White AC2792 dongle. as u said it connects only one time, same is happening with me i tried so many things but still...