Phone is also locked and not much working on my IPHONE . It seems as though Apple must be aware of the problem since it is their Application update that creates the software problem. After researching the issue the numerous remedies listed are either the same solution, or to expect a hardware problem. The phone I own is less than two years old and I doubt it is a hardware issue. The problem is reported after the user application update has been completed. I believe since Apple is asking users to update their APPS and the problem then occurs they would have a solution. I will be taking the phone to a store (if they tell me it's hardware I will not be purchasing another Apple) to see if they will stand behind their software and hardware created problems. Someone had previously complained a bug is used in order for consumers to upgrade their phone. ( I would hope this would not be the case since APPLE is a large brand with little stock option for the average consumer.)