Dose not have coverage all the time and for travellers this is not got at all .you can also get auto hangup when call is goin on so over all every thing is ok not worthy
3g is very poor if you want call then call rates are very good dont well if u want to use internet I wud not recomend aircel but for calling pourpous its very awesome because of low call rates and it has low package of 3g many towers in mumbai so mumbai peoples can enjoy