State Bank Of India [SBI] — For change registered mobile no.

Address:

304804

Respected sir, I have an account in SBBJ Branch In Deoli Tonk Rajsthan. From 2009. I want to change my old no. [protected] in new no [protected]. Pls help me. How i can update my mobile no.
A/c Detail-
Branch- State Bank Of Bikaner and jaipur, Deoli, Tonk (Rajsthan)
IFSc Code- 10090
Name- Sumit Kumar Meena
Ac no. - [protected].
Old mob. No. [protected]
New mob no. [protected]
Sir help me i can't contact branch because i live in other city for job. And settle there.