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Hi if you've locked your phone through entering an incorrect pin number 3 times then you need a Puk code, Ring your service provider and they will give you the FREE Puk code.....
If you lock your phone again some time in the future and you're still with the same service provider you can use that same Puk code..
Hi free unlocking services are unavailable for iphone .So better go for paid services to unlock iphone render by online providers like Superunlockcodes.com here they unlock iphone 4 using remote unlocking service .Before getting the service check whether the service is available for your country and network provider to which your iphone 4 is locked at present .If yes then pay for it and unlock your iphone 4.
Hi, this happened to me once and I researched a fix by looking for 'iPhone black screen of death' Here's one of the current articles that comes up under that search: 1) If an application (such as Safari) is frozen, just press and hold the iPhone's home button for about 5 seconds, or until the home screen shows up. (This didn't work for my iPhone so we had to perform a soft reset). 2) To perform a soft reset, press and hold the iPhone's Sleep/Wake button and the Home button for several seconds, or until you see the apple logo on the screen. (This action did reset my iPhone and I was very happy at this point). The guys that helped me said that continually performing soft resets can cause problems however. 3) Hard resets are not recommended, but are required when a soft reset won't do the trick. The Apple Geniuses wouldn't tell me the key combo to perform a hard reset because it restores the iPhone to a state that's unusable. Users risk losing data and you must synch your iPhone with iTunes to make it function after a hard reset.
Also, if you are not turning off apps after use they could be overloading things and might cause it to happen again. to turn off apps do a double tap on the 'Home' button, and all your open apps will be listed along the bottom of the screen. press on one icon and hold until the icons start to wobble and have the X in the top right corner click on these to turn them off. Its also good practice to do this several times a day if you use a lot of apps because having ghem open eats up your battery power.
conncect your iphone to itune. press power and home button at same time and wait for itune logo to come on iphone screen.itune on computer screen will say restore your phone.click restore that will erase everything from your phone including your passcode.remember you will loose everything from your phone.
it may just be software within the phone, after all after two years theres a lot that changes with the software.
Best bets is to restore your iphone from a backup & see if that helps it may just be lagging, but if that doesnt work it may be that you need to restore as new, this will mean loosing all your data though...
please check your iphone in settings and version and check what firmware version you have.
if you have an earlier version you can download an app from iphonedevteam.com called "yellowsnow"
the app will unlock you phone.
Go into your setting<General<Reset<Reset Network Settings
This should fix your problem if it does not then maybe your service provider is to blame, if not just faulty iPhone hardware. In that case you can take your phone into a Apple retail store with an appointment and get it swapped for a new one. ( as long as you are within your hardware warranty)