Self — Internet not working on roaming

Address:

Ajmer, Rajasthan

I have a airtel number [protected] which I am currently using on LG G2 at Ajmer (Rajasthan) on roaming originally registered in mumbai .My 2G internet does not work although I have configured my phone with the required settings.(My internet works properly at Mumbai -Maharastra).Please help, I need to resolve my problem as soon as possible.