How do I know if I've permanently damaged my phone?

Apple won't touch it. Find a competent 3rd party repair shop or buy a new phone.

When you had the display replaced, you forfeited all rights to have it serviced by Apple. It's no longer an iPhone.

Apple does not sell parts. The only parts whoever fixed it could have used had to fit into one of three possible categories for where they came from:

Salvaged from broken/damaged phones.

Counterfeit.

Stolen.

It's a frankenphone. It's no longer an iPhone. It has non-Apple parts in it, or Apple parts that came from a defective or damaged iPhone. It was opened and "fixed" by someone who was not authorized to do so. Take it back to them and ask them if it's "permanently damaged".

Hi,

Recently my iPhone 4 went blank..couldnt on. Brought it to a phone shop and he on it back for me but my photos in my library were not there. But there were some memories in my icloud. Again my phone went blank. Another shop said that it was due to overcharging that has caused it to short. In this case can I retrieve my photos from the icloud website using my Apple ID?? My baby's photos are there... Need help... 😟

have it replaced oow at apple

http://support.apple.com/kb/index?page=servicefaq&geo=United_States&product=ipho ne

Peace, Clyde

I doubt Apple will give you an out of warranty replacment if it wasn't initially serviced by them. The only way to find out is to bring it to them and ask.