Can't I change the battery for the iPhone I bought directly?

A. 1

I heard that the battery can't be replaced

Gentleman 6 years ago 0

OK

A. 2

I need to register the device at the domestic as center, but I heard that the foreign product's model name was completely different, so the computer was blocked first
I'm sure there's a traffic jam because I didn't register my battery

Gentleman 6 years ago 0

OK

A. 4

I saw a person who got a free battery replacement from U-base when it was a direct purchase model for T-Mobile in the U-

Gentleman 6 years ago 0

OK