I dismantled my iphone 4 from the front (by ripping the whole front off) and when putting it back together the screen now doesn't work, the phone still works as its vibrating and can play random music, charge etc. I did not realise (STUPIDLY) that you can take the back cover off. Is there any hope?? Took it to a phone shop this afternoon and the guy told me i need a whole new screen even though the screen should be working. There are 2 plasticy things hanging from the top right that i do not know where they are meant to be connected to.

The reason i took phone apart was to try and clean the speaker from the inside, after watching a video on youtube on how to do so as i hardly had any sound from phone and making calls was difficult as i could hardly hear. Also worth mentioning when playing musix from speaker it wasn't very loud either which the guy in phone shop suggested speakers at top and bottom on phone need replaced.

ANy help would be greatly appreciated, i don't know whether to put a claim in as i have insurance but don't know how if this is covered by accidential damage?

Thanks