I am an iphone4 user from United Arab Emirates with home button/MIC not working during call problems..

Question

hi, i am an iphone4 user from the United Arab Emirates. I got my phone as a gift last September and it was not bundled with any carriers and was a factory unlocked piece. Within one month of usage the home button started misfunctioning. It started registering double clicks as single, triple clicks, etc. (the usual complaint of many countless users of iphone from the time of the release.) I then kind of ignored this problem and continued using the phone.
With this problem still continuing, comes another one.
My friend gave me a call yesterday, and we were talking happily for a minute or so and suddenly without any reason my friend failed to hear me. Five minutes was spent trying to make myself heard to him. I tried and i tried and the only solution i could find was tapping the phone gently,but firmly. Then he was able to hear me but then after sometime it was back to the same problem.
The only solution i found was to tap in th sides.(please note that this is also a common problem with many who have call problems but no voice memo problems.) I tried adding and registering my device to my account but when i try to put in my iphone's serial number,they say that the device number is invalid.
Now i want to get a solution to this, but since this was a gift piece i do not have any invoice of any sort. I even checked itunes.com/support and was happy to find i still have warranty till september.
I am confused as to what to do as I was dissappointed to find even a single apple store in the UAE and do not know what do we get in terms of support. Could someone please help me?

Answer 1

that is exactly the problem. I have no idea as in where this phone originates from. It was gifted to my Dad from a personnel who he was supplying for in the company. My dad then gifted it to me on my birthday. I asked my dad about the phone but he also does not know a thing. He also said that the other guy must have taken the invoice with him as he did not give anything to my dad.
I checked it in quite a few places (like SharafDG,eMax,Axiom etc., the local electronics suppliers) to track where this phone was originally purchased from( because these people usually take down the IMEI's of the electronic devices they sell), but they all could not help me.
Now i have no idea what to do and i do not want to spend huge amounts of cash for this matter as i am already in the warranty period. Anyways,thanks for your help in advance, but it would be helpful if you could try to get this solved for me.