How to go about unblocking an iPhone on orange?

I recently had my iPhone stolen on holiday so have brought a new one of gumtree. It is a brand new iPhone and not stolen (the man i brought it off renewed his contract and they send him a new one but he already had one so sold it) The iPhone is locked to orange and I have a t-mobile sim. I haven't set up the phone yet as i don't know if it will work with this sim in (will it?!) And i was also wondering how long would it take shops to unblock it. Obviously i would turn it on for them to do this! Seriously any help it appreciated on this x

Hidden GPS tracking device in a car?

I know this is creepy and weird, but you know how females are sometimes, so I really need someone to help. My friend's ex boyfriend keeps hiding live tracking devices in her car. This is his fourth one. The first 3 were really easy to find. Regular old magnet boxes on the under carriage of the car. WE Can't FIND THIS ONE! We have looked everywhere, but he keeps getting smarter. I know it is live, because he knows where she is as soon as she arrives there. Does anyone have any ideas of how he is doing this? Could it be through her cell phone? She has all gps features disabled on her phone, but could he secretly be doing it through her iphone?
Her car is a 2012 Lexus is250… If that makes a difference.

Added (1). She isn't going to call the police. Yes i know that isn't the smartest, we just want to find it and hide it somewhere.

How to pair iPhone over Bluetooth to a Mercedes c300?

I have an iPhone 3GS and 4 and just recently purchased a Mercedes 300. Trying to get Bluetooth to connect but having a lot of trouble. I activate Bluetooth in the car and it says Bluetooth telephony ready… On either phone I also turn Bluetooth on but it can't find any devices. From time to time "HandsFree" will pop up but if I try to connect it says it is out of range and disappears. I've read that there are iPhone kits they sell to connect? Seems a little weird to me you have to use a kit if both devices have functionality but has anyone ever connected the 2?

How to remove unwanted email from autofill on iPhone 4s?

I entered an email once and it comes up every time when I type in one letter. The email is not in any of my contacts so there's no removing it there. And autofill is set to off. Any suggestions or am I stuck with it that way?

How to remotely access someone's Iphone?

Pretty sure my significant other is cheating, is there a way to gain access to their Iphone - hack it remotely? They won't let me even close to seeing it so I can't use an app I found. Just want to find out for sure if it is true.
Thanks

Added (1). Asking, doesn't work, and neither does dumping. Past history of cheating on a couple of their former partners years ago and seems their behavior is sketchy and the no access to their phone, not even to make a call seems a little too suspicious. Would really like to get into it to avoid a "scene" and to ease my mind.

What happened to all my emails?

I was on my iPhone and something came up about a new Yahoo but I didn't ask for it and now all my emails have dissappeared!

Iphone 4 No Service Problem

I have an iphone 4 with ios 4.0.1 and the problem is that there's no service on it. I jailbreaked it but there's no service
any help?

Iphone 4S glass cheaper to replace myself?

My iPhone dropped out of my pocket last Saturday and the glass on the back has completely smashed. I've taken it in to a third party repair service as the smashed glass means it is now out of warranty bland they want £100 to replace the glass or I can buy a kit off the Internet for about £6 would it be better to buy the kit and do it myself to save sone money or should I get it done by someone who knows what they are doing?