Why does my iphone use so much data? - 1

I got the phone two days ago and get 500mb of data a month. Like have already used 400 and was wondering how and why it is doing it. I use a lot of social media and facetimed once the day I got it for 10 minutes. I went into O2 and they told me it was because of an update but it is still using a lot of data. I was wondering if there's a way to stop this

IPhone 5 won't connect to Wi-Fi?

Over the last month or so my iPhone 5 has been hit and miss with connecting to my home Wi-Fi. Sometimes it will connect others it won't even pick up the router. When it does finally pick up the router I enter the password and it either says unable to connect to incorrect password. I have tried resetting the network settings but that didn't help.

Anyone know how to fix it?

Vertical lines down my iphone screen?

I woke up this morning and checked my phone, only to see that I have about 10 vertical white lines going down the front of my phone, they don't go either, even I'm on facebook; they're there, same when I go on camera. I restarted my phone but they still won't go, does anyone know what this is?

Can't delete photos on my iphone?

I have an iphone 4s and when ios7 came my phone replicated my photos into another folder, I've tried going onto itunes on my computer to delete them as it won't let me delete them from my phone but itunes doesn't think there are any photos on there as they weren't imported from the computer? Could this be because I've changed my laptop since having these photos replicated? How do i delete them?

Swapping iphone under warranty?

My friend is selling an iphone which has a problem with the touchscreen not responding at times. He's bought another phone and wants to sell his iphone and claims it's under warranty till next year. If I buy it and take it to apple for a replacement. Will I be able to get it?

Problem with iphone 5s and ios7.1.1?

Ok so i can't send messages any more i have no service, my phone says in the left upper corner: searching… ( and that for about already 2days) So i tought about activating my imessages but it also doesn't work, so someone told me to update the new version ios 7.1.1 and when he is finished downloading and i want to install the new version it says this: ( see picture). So what can i do to have my messages and imessages back or to install ios 7.1.1?
Problem with iphone 5s and ios7.1.1

IPhone 5C owners, how's the iPhone so far?

I'm planning to buy the 5C by the end of May and I just want to know how the iPhone's going. I won't go for the iPhone 6 because of the rumored bigger screen. (not a fan of big screens). I also won't go for the 5S because I gotta' save money for a present to my girlfriend. Haha

Should I get iPhone 5s or wait for the iPhone 6? - 1

I have a XPeria Sola for 1 and a half year. My mum told me that she finally has the money and she can buy me a new phone and the price doesn't matter. And she told me to buy an iPhone 5s but I wasn't sure if the iPhone 6 will be better or just a few differences. So what do I have to do?