[actuator]

But all those replacements seem to be with someone pulling apart the phone's components secured with glue. It looks extremely risky and likely to cause damage to phone or components like display ended up getting scratched.

Also, are original spec batteries available easily? I don't want to put something which is not the same as it might cause some battery related accident.

[nicoburns]

I think the repair shops tend to have specialised tools for dealing with this. Things like suction cups to pull the screens off with.

[t0bia_s]

OLED dispalys are very sensitive for pressure. But isolropyl alcohol helps a lot with detatching anythig glued.