Iphone 4s keeps deleting my contacts why?

I have never backed my iphone 4s up to itunes in a long time as i no longer have a computer and have to keep asking people on facebook to send their numbers

My phone will freeze and not let me onto anything when i click an app and only way to start it working again is to turn the phone off and back on again. This has happened 3 times in the last month or so and each time it wipes all my contacts, why is it doing this? Would i be better off getting a new iphone?

How to track a stolen iPhone?

My friend got her iPhone stolen today @ school & we're trying to help her find it. I told her about the find your iPhone app but she didn't have it so I don't think it'll work to find it? So is there any other way to track her phone? All I know left is to call the police.

My iPhone 5 jailbreak is acting up?

Okay so i was with my friend and he told me he got this sort of android lockcreen type thing on his iphone 5 so he showed me it on cydia and when i downloaded it it made my phone not be able to unlock. When i say not be able to unlock i mean like it says slide to unlock or whatever i slide and it tells me to enter my password but it won't let me type anything! But if i get a phone call i'm able to answer it. Its like i'm not able to access my phone which sucks. I can't even restore it without having the password off. Also, i have already rebooted and hard rebooted my phone. No help! I need help fast because i have school in the morning and my phone is my only means of waking up (my alarm). Any suggestions woul be greatly appreciated ):

Added (1). To the guy who said reset it, did you not read what i said --- geez

What is part of data usage for iphone?

I have an iphone and i got a notification that i've used up 90% of my data.
What activities/things that i do on my iphone are considered data? What things on my iphone uses up data?

Why do apps take long to download on my iPhone 5?

I recently bought the iphone 5 (first time user of the iphone). I noticed when I try to install apps they take quite a while to download. What do you think is the cause of this? My internet is pretty fast… Some apps that would of downloaded very fast on my htc sensation is taking a while on my iPhone 5 now.

What are your opinions on T Mobile?

As of right know I'm using Virgin Mobile, and at first it was fine but know I highly dislike it. The service is slow and the phones are really expensive. I'm wanting to switch to T Mobile but I have a few questions.

1) on the site it says that it is only $50 a month, will that go up? Be honest, I really need real answers!

2) I'm wanting to get the iPhone 4s how is the service for it?

3) is using a app that requires Wi-Fi considered using web data?

Do you have any other opinions good or bad? Are there any pros or cons for haven a 2 year contract with them?

How to jailbreak an old version of iPhone 3Gs with iOS 6.1.3?

I've never jailbroken before, and I'm trying to use redsn0w. But whenever I try to jailbreak it (I follow all the directions) it says "waiting for reboot", but the phone won't reboot. It's supposed to. I'm also using 6.0 firmware, but that isn't supposed to affect the jailbreaking process.Am I doing something wrong, or is there another way to jailbreak with iOS 6.1.3?