Can I swap the mainboard between AT&T and Verizon Galaxy S6 GM920 variants?

[kizoin]

I have a completely broken LCD/Digitizer on an AT&T SM-G920A with photos I'd like to recover.

I acquired the Verizon variant, (SM-G920V) of what I believe to be the same exact model S6 in "Black Saphire."

I was wondering, rather than remove the screen assembly from the new SM-G920V, and try to install it on the potentially compromised housing of the broken SM-G920A (phone could have more internal damage than just a broken screen), could I simply pull the main board off the broken phone, and swap the old board into the new phone? Would it operate?

Phone has no water damage, it just sustained damage from a 40ft drop onto concrete.

I've read mixed things about different connections internally between variants, and I'd rather not find out after the fact- so I figured I'd ask anyone in-the-know before disassembling the new phone and breaking any adhesive for no reason.

Again, the goal here is to recover data off the old phone that I've had sitting in a drawer since 2015 when this happened. Also worth noting: Old phone doesn't seem to hold a charge, although it seemed to still have power when the accident happened. I don't see any backlight when I plug it in to a charger, and nothing happens when I plug it into USB on my computer in my attempts to access DCIM directory, so I'm assuming it's not getting power or the broken screen assembly prevents it from booting.

Photos of the evidence, took additionals of the damaged phone to show the extent of it:

Any advice would be appreciated, I do have cell disassembly tools (and some experience with smart phone disassembly) on hand for the job.

 

[hang-the-9]

Why not just get the exact same phone model and try it? If it's that important that you want to get photos, the cost of a used working phone should not be much, and you don't need to worry about something not working with the Verizon model. For myself, if I had a phone sitting for 3 years with photos I did not bother looking at again or backing up, I'd just cut the phone in half and toss it.

 

[kizoin]

Why not just get the exact same phone model and try it? If it's that important that you want to get photos, the cost of a used working phone should not be much, and you don't need to worry about something not working with the Verizon model. For myself, if I had a phone sitting for 3 years with photos I did not bother looking at again or backing up, I'd just cut the phone in half and toss it.

The phone was given to me, so I thought why not as an experiment. My thread is directed towards those who have experience with this, I didn't ask for opinions about what other people would do in my situation. If it was urgent, I would have done this a long time ago, but it fell into my lap. There are photos that weren't backed up of my deceased dog, and I'd like to have them.