you and me very matched.

For me, 15 in total. Physical banks, digital banks and ewallet.
1) Maybank - register on new phone and head to ATM to enable Secure2U
2) RHB - unregister from old phone. Activate Secure Plus at ATM
3) Grab - just login on new phone
4) Rize - just login on new phone. 12 hours cooling off period
5) GXBank - selfie verification. 12 hours cooling off period
6) TNG ewallet - selfie verification, either passkey or pin.
7) MBSB - worrying. Just think new iPhone is old iPhone.
8) SCB - need to call in customer support to get new SC mobile key temp pin.
9) Ambank - verification via ATM debit card PIN number. 12 hours cooling off period
10) Allianz bank - website to unregister, Terminate mobile access. Can’t do it since need mobile app to generate code. Duh!!
Went back old phone to terminate. Using SMS (charge money) to get code. 12 hours cooling off.
11) AEON bank - uses email to authentication. 12 hours cooling off
12) Boost Bank - best implementation, will prompt whether you dont have old device, instructions to remove from old. 12 hours cooling off.
13) Public Bank - register on new phone and head to ATM to enable PB SecureSign
14) Boost wallet - just login on new phone.
15) Hlb - worryin. Just login on new phone.
Also my tips, for Apple Pay, if you using esim, dont activate during setup. Just skip until esim is sorted out. Seems common sense, but at that setup time, brain dont comprehend it until later.