I have a four month old Iphone 4, from the Apple store, And seems like every day something stops working on it. Today I can't hear the person thats calling, but they hear me fine. Anyone know how to fix this?

Question

That is just the most recent problem. Other problems are the screen freezes all the time, and it won't scroll or do anything. Another is my keyboard lags as I type. another problem, is with some of my apps are constantly crashing. And It is not the apps itself per se, because my friends can be using the same app, and they are fine. Another would be emails not pushing. I will have some emails that show up, some will say I have new emails, but open to check and nothing there. Then other times i will have like 17 emails all show up at once, with some being sent days before. Another problem is my Wifi turns itself off all the time. Even when I am sitting less than 10 feet away from the router. And When I add new contacts, they are visible for a few days, then all the sudden they are nowhere to be found. Sometimes it will at least save the number in my contacts, and no name or other info. And other times it doesn't save anything. These are just a few of the many problems.
Because I got this phone shortly after the new IOS7 update, I thought since I had read about problems others were having after updating, may have been the reason I was having some initial problems. But they have only grown to more problems, and not getting better.
Has anyone else had these same problems? Do I just have a bad phone? If you have had any of these problems, were you able to get a fix and how? Any help would be greatly appreciated.
Thanks

Answer 1

I have taken it back to the Apple store genius bar, but they say they don't see anything wrong. Well unless you use it all day and experience the problems when they happen, you wont see anything wrong. But there are lots wrong with it. But this would be the same store as I purchased the phone. And they backed up my old Iphone 4, but were not able to get anything to load back onto my new phone. So, I lost pretty much everything. But over time, some of my contacts have started showing up, although i am still missing over 800 of them.