Enable Autofill SMS Verification Code so That OTP Code Will Be Automatically Filled (Samsung)

I want to use a new mobile handset. do i have to insert my mobile SIM in old mobile to receive whatsapp SMS code or push notification??? How to connect to internet in old mobile phone for push notification of whatsapp l??

How about in huawei

Exclusive

Very flynable

Very expensive

Is very very inclusive

Very affordable

Gbaord won't work nice on Samsung phones it won't autofill

Please slow down

Sms verification code is not available in mobile how to get that?

It is not available on Samsung tab s7 fe

Does this work with Gboard because it's not on my end after doing all the steps