There was a time when mtnl had problems in 2012 I’m using mtnl from 4-5 years Mtnl had worked on many of the problems the Wifi is Awsome if you are in any of the problem you can call 1504 and they will help you out to solved the problem on phone itself.the sad part is that if nothing happens and we complain that our Wifi or net is not working fine? They take time to come and this may create problem but it’s fine. overall mtnl is a great net compared to any other.