How to activate GPRS in BSNL CellOne Prepaid.
1. First you need a GPRS supported handset and a minimum balance of Rs. 250/-
2. To activate send GPRSPRE to 53733.
Activation cost is Rs. 50/-. You should wait for getting confirmation message of activation.
3. After getting the confirmation message sent your handset model to 58355, in the following format.
Eg. Nokia 6020
4. You will receive a message which contains the PIN number. Note the PIN number. ( I got 1111)
5. You will start receiving the settings one by one. Save each setting and activate the setting. Enter the PIN number whenever requested.
Get Full Document: Download GPRS Setting (Manual)
More about BSNL Mobile.