To update your nominee details,

1. Go to the Help section on your app or website. 
2. Tap Contact Support.  
3. Tap Managing my account>Manage my profile>Nominations>Update nominee details
4. Download the attached Nomination Form ,fill out the form, and courier it to the below address:
   PhonePe Wealth Broking Pvt Ltd,
   Office-2, Floor 4,5,6,7, Wing A, Block A, Salarpuria Softzone, Service Road, Green Glen Layout, Bellandur, Bengaluru Karnataka- 560103, India.

Note: 

• Please make sure you share the bank attestation for signature verification for your linked bank account along with the duly signed Nomination Form
• If you have uploaded your signature instead of drawing it at the time of creating a PhonePe Broking Demat account, you need not share your bank attestation for signature