iPhone 12 Pro Max URGENT: Switching SIM from 6s to 12 Pro Max ok?

[pi6xjdskfa]

Hi

I upgraded to iPhone 14 Pro max from 12 pro max using ATT. Gave the 12 PM to relative who is using iPhone 6s with ATT.

Can they just swap out the working SIM from 6s to 12PM? One of the forums mentioned you need a new 5G SIM card for max
performance? Will 6s SIM create slower 5g on 12 PM?

Is there anyway to just swap relatives account to ESIM or are there problems with ESIM on 12?

Thanks

 

[Shirasaki]

Just go with eSIM. All of your problems solved. And you can enjoy 5G right after that. Don’t worry too much about transfer speed. That’s only part of the network performance story.

 

[pi6xjdskfa]

Just go with eSIM. All of your problems solved. And you can enjoy 5G right after that. Don’t worry too much about transfer speed. That’s only part of the network performance story.

How do you switch account to ESIM from 6s to 12 PM? THANKS

 

[Shirasaki]

How do you switch account to ESIM from 6s to 12 PM? THANKS

You need to contact carrier for this.

 

[pi6xjdskfa]

Ok, THANKS!

 

[Silverbird0000]

The 6s SIM will not allow 5G on the 12. You need to get a new physical SIM or use eSIM.