Bright white dots on iPhone 4s screen
3 months ago, I bought the Apple iPhone 4s via Three UK. It was a brand new contract phone.
About a week ago, the phone developed a bright white spot in the middle of the screen, white is very noticeable.I had not dropped the phone at all. Then, a few days ago, another bigger but not as bright dot appeared on the screen. What is this and how can it be fixed? I believe the iPhone is in its warranty, but I'm not sure what the problem is. I have also noticed that the phone is freezing lots, and is randomly re booting. Yesterday, the phone was not making any calls in full bar areas.
Thanks in advance,
bainb8248
iPhone 4S, iOS 8.1.2