Is it easy to replace iPhone 4 screen yourself?

I cracked my phone today… 2Nd time I have cracked it. The first time I took it to the mall… & it was like 99 something… & I don't have that type of money to be fixing a screen again. So my plan is to buy one of amazon. & fix it my self. But I was wondering should I fix it my self is it easy?

Good iphone apps for tracking exercise?

I'm looking for an iphone app that will track how much I walk at work and be able to map my runs at night. Most important is mapping my runs at night. I want to make sure I always go further than the night before

I want to switch my Iphone service from AT&T to Net10.any one else done this?

I don't even know the first step involved. I know with AT&T the cancellation fee is $325.00 minus like 10 dollars every month you have had service. But what I'm questioning is, how do I go about just completely switching services? Do I have to cancel my service first? Does my phone have to be unlocked? Etc.

Can I restore data form my iPad after accidently using find my iPhone?

I was using find my iPhone on my iPad to track my friends lost iPhone. I tried searching my iPad and than I clicked lock iPad to see what it does. Than my iPad of and I entered my pass and clicked again because I thought it would off the lock thing. But… My iPad rebooted and lost All of it's data! Any way I can restore?

Is someone tracking my iphone?

I have an iphone 4
sometimes the little grey arrow will randomly appear for a few seconds for no reason
does this mean someone is tracking my iphone?
would it be possible for there to be any way of doing that even if they don't have my icloud password?

Why is the Wi-Fi connected to computer but not to iphone 4?

I have been having trouble connecting to iphone. My wireless connects home to Wi-Fi and others but at work it won't connect. It says it connected to computer but on my phone says connected but when i actually go into Wi-Fi it just has a waiting sign going around which won't connect. Does anyone know why this could be?

Why can't I view my messages on MySpace?

I downloaded the MySpace app for iPhone. It's working fine til when I checked my Messages, I can't create/write nor receive. I only found out I have messages pending when I logged in using Safari on my iPad. I figured to try it on my iPhone but MySpace isn't responding when I log in using Safari on iPhone.

Will I just need to wait for an update then? It's bugging me lol I use my phone more than my iPad when I'm out. I don't know what to do lol *whine