Apple Iphone XS Max Info?

I'm looking for some information I heard the Storage 128gb XS Max when i tried to upgrade to a new phone from phone company is it true?

Also i want to ask if anyone own XS Max Does it have feature i saw where you can charge up another xs max by holding it together?

Ask Apple customer service, they are the experts.

AT&T offers XS Max phones from 64MB to 512MB, same as direct from Apple.

As for the back-to-back wireless charging, that's not a thing yet. The Qi charging receiver in the phone is not designed to send energy out.

" I heard the Storage 128gb XS Max when i tried to upgrade to a new phone from phone company"
--not sure what you are trying to ask there. There's a 128GB iPhone XS Max, & 64GB & 512GB.

"Does it have feature i saw where you can charge up another xs max by holding it together?"
--that feature is from another phone, the Huawei Mate 20 Pro which has a feature called Reverse Charging which can charge other phones capable of wireless charging. You may have seen the video I saw where the example phone was an iPhone XS Max, but the iPhone was being charged, not the one doing the charging.