1. Select “More”, the 4th menu from the bottom.
2. Select “Settings”.
3. Select “Edit profile”.
4. Select “Mobile no.”.
5. Enter your new mobile no.
6. From “Change mobile no.” page,
6.1) Turn on "Link new no. with PromptPay".
6.2 Select account to linked with PromptPay.
6.3 Select “Next”.
6.1) Turn on "Link new no. with PromptPay".
6.2 Select account to linked with PromptPay.
6.3 Select “Next”.
7. Enter PIN to confirm.
8. Enter OTP received via SMS.
9. Mobile no. changed and linked with PromptPay successfully.