The knowledge of the apple users is not hidden regarding problems of the iphone 4 but sometimes the smart phones behave in such a manner that problem seems to be unknown and difficult to describe to the technicians. In such situation an expert service provider must be consulted who can pass this iphone through a series of tests in order to figure out the exact issue. If you send us your iphone 4 via pick and drop service by calling at 04 4211494 we will pin point the real problem and will seek permission from you before proceeding. We are situated at the central hub of DUBAI so you can also give us your precious visit. Email us at firstname.lastname@example.org or live chat with us.