once I noticed my MTS Mbrowse modem was deactivated automatically. Then I contact with my retailer. They are unable to solve my problem and forwarded to the MTS regional officer. He committed, will be send a new SIM to reactivate very soon. Then I contact with him atleast 10 times during the last four months. Each n every time he comments, will be sent to your address very soon. Now he said, It was delivered to my address 3 months ago. If you donot get any SIM, I have NOTHING TO DO. MY DEVICE IS NOW A LITTLE TOY FOR MY BABY.