http://mtnlmumbai.in/index.php/mobile/3g/postpaid#3g-postpaid-data-plansMTNL has introduced truly Unlimited 3G Postpaid plan in Mumbai circle. Postpaid 3G data plan of Rs 1650 which was earlier offering 50GB 3G data usage has been revised to offer Unlimited 3G data usage . The revised 3G plan is available from 1st Dec’13 for its customers in Mumbai. Interestingly this revision has not been carried out in prepaid segment and prepaid pack of Rs 1650 will continue to offer 50GB with 30 days validity.