hi, basically i have a 3 month old iphone 5s and after a while the fingerprint function stopped working. I was living in dubai at the time and theres no apple stores there and so i thought the best option was to go to a phone shop and get it fixed there. The shop didnt fix my problem and so when i came to the UK i decided to take it to the apple store here. Turns out getting it fixed by a third party voided my warranty. however, when i gave it to the genius bar, it was working perfectly fine (without the fingerprint function). When they gave it back, it had white squares on the screen (google search described problem as loose connection). Apple employee said theres nothing they can do about it as my warranty is void even though he made my problem even worse and now my iphone 5s which i bought 3 months ago is no unusable. Does anybody know anything i can do or am i basically screwed?