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I had upgraded my OS to IOS 5.1 in my iPhone and since that upgrade many of applications stopped working,
why is it so,some help please?
If this is the first time it happened on your phone, try rebooting your phone and then check if the applications came back to normal. If it still doesn’t work, try turning off your phone, open its back cover then remove its battery. Keep it detach for about 5 – 10 minutes to totally clear the phone’s system. After this, install the battery again then start the phone. See if the applications are working.
If still not, try reinstalling one of the applications as a test and then see if it solves the problem. If this fixes the problem then just apply it to the rest of the applications that stopped working. I think this problem is somewhat similar to formatting the phone which requires reinstalling all of the installed applications.