A Professional iPhone repair service is found in most major cities and in many of the smaller ones too. You can do an internet search to discover an iPhone repair that is near to you. You do need to take that iPhone to the store. Or as and option you can mail it to them but it makes more sense to really take it on yourself. You might need to do without it for at least 24 hours. You simply have to select a repair shop that does repairs to iPhones. In case you have an iPhone 4 you might need to find one with lots of expertise on this creation iPhone. When you take it they will ask what is wrong with it and if you understand then tell them. However they will still hook it up in their store to test it out for all its functions.
There are plenty of things that could go wrong with an iPhone 4 which you may find you will need to start looking for a singapore iphone repair shop nearby. You might have a LCD display that starts to bleed colors into each other or one which the liquid crystals start to find green or another colour for a bizarre screen result. Generally you can still use your iPhone till you can find that screen replaced unless you’ve lost your iPhone and the screen cracked or shattered but if your mobile phone hit the floor hard enough to split the display then you might need to receive your entire iPhone replaced or repaired.
There are different things that may break on the iPhone 4. The battery is not supposed to be replaced by the operator but it is made to be taken to a mechanic or at the producers opinion return to the Apple iPhone shop for a replacement battery or if in the Apple iPhone shop they may talk you into getting a new iPhone now probably the iPhone 4. An iPhone repair shop would not attempt to sell you a brand new phone if you do not really need one and your mobile phone is not repairable. However, these repair shop techs are really amazing and can repair nearly every problem.
Some of the other issues that may impact an iPhone are that because they are heavily used for many applications they are subject to being lost, run over by a car, or even eaten by the dog. Some of these may be mended but some like when the dog has completely chewed up the situation and got his fangs to the circuit board then you might be unable to do anything but get a new cellphone.