I guess that means all Samsung phones ("not sure which ones") are inferior to Apple phones, hm? ;)
They're replaceable, but they are clearly not meant to be done by the user. There were many opportunities to break pieces of the phone or ruin it completely. It's a horrible design.
But it was a hell of a lot cheaper than the quote I got from the repair shop, and I didn't break anything. (Which isn't a surprise... I like fixing things.)