As you want to activate Mobile Banking Service of State Bank of India (SBI) on your Account, so you should follow these instructions:

Instructions to Activate Mobile Banking Service:

Download the Mobile Banking Application in Mobile Handset:
For Android Phones - from Google Play Store.
- For i-phones – from Apple Store
- For Windows phones – from Windows Store
- For Java phones – from Nokia Store for Asha series. For other phones, download from website of SBI

Registration / Activation Process:
Send a SMS <MBSREG> to 9223440000. User ID and default MPIN will be sent as response to the above SMS.

Login to the application. You will be forced to change the default MPIN. Enter the default MPIN in the “old MPIN” and a new MPIN of your choice (6 digits) in the “new MPIN” and confirm by entering the new MPIN

SMS – “Your MPIN is changed and validation of handset is successful” is received.

Register at ATM/ Internet Banking/ Branch:

At the ATM: swipe the Debit Card, select Mobile Registration > Mobile Banking >Registration > enter your mobile number and confirm

Onlinesbi: Log into OnlineSBI, select eServices > State Bank Freedom from the list on the left side > Registration > Enter User ID and mobile number > Select the account (only SB/ CA) to be enabled > submit.

At the Branch: Visit the Home Branch of your account.