The same happened with my Samsung Fold³ along the crease line on the internal screen which was the factory fitted screen protector delaminating.
I peeled mine away and now use it without one.
It's a plastic sheet Samsung put onto the phone the same way they've done with other types of phones.
Removing the factory fitted screen protector does not invalidate the warranty however the caveat is that if the display is damaged in the process of peeling it away then that can. But I found removing mine was an easy process.
One can then use it without one as I do or buy one from an accessory manufacturer or ask Samsung if they can refit one.
Take into account the screen is a softer material than that of the more traditional slab type phone's with a harder screen.
More care needs to be broached with these types of phone's.
Samsung has Service Centres and Samsung Experience Stores in the UK along with Doorstep Repair Service in some areas, and phone's can be sent to them.
Take time and date stamped photo's of the phone if you do let them take possession of your phone with one of it turned On to show it's aesthetic condition while in your possession.
This is justba safe guard i personally always undertake.
If I can be of any further help then please don't hesitate. Take care. 😎
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
3 months in and I too noticed bubbling foaming on the edge. Took it into the store and they tried to repair it on the spot (apparently they have a special machine to do it). I didnt work and the sales rep told me I had to send it to samsung assessment centre to get a brand new screen. Just got back my assessment summary and they are trying to extort me $190AUD because they are saying there's damage to the screen and isn't covered under warranty. I have not dropped the phone and I've had a cover on it since taking it out of the box. Going to dispute this. The phone is not even 6 months old yet.