I bought a new sim card for my iphone and it have been having a few problems?

I purchased a brand new o2 sim card today but it has been having a few problems, first off it shows it has been recognised by the phone however it doesn't have any service bars, I know its not the phone because other networks work and have signal, I have chatted to o2 and we have tried to switch off and on the phone, take the sim out and in, cleaning the sim and no progress, I even put it in another phone and activated the sim but when I put it back in my iphone still no bars. And whenever I try to dial anything on the phone (even emergancey services) it straight away says "call ended" and then goes on to saying "call failed".

How to transfer photos to my iPhone 5?

So right now I have a iPod(5th generation, if it matters) and in a couple of days i'm getting an iPhone 5. I know there probably isn't, but is there a way I can transfer all of my photos from my iPod to my iPhone?

IPhone 5 for T-Mobile or Sprint?

I'm planning on purchasing the iPhone 5 and want to sign up with either T-Mobile or Sprint, mainly because they both offer unlimited data. I want to know which is better and who has the better deal right now. I know Sprint has the $100 off deal right now, making the phone $99 but $173 after fees and taxes in my area. I don't need unlimited data so i can get the $79.99/month plan but that is not including taxes.

T-Mobile has the montly payment of the phone paid in 24 months making my montly payment $90. Not sure what the taxes and fees will be ultimately. I will pay $149 upfront for the phone, excluding taxes and everything. Which deal is currently better? Who usually has better service? Faster internet and download speed, dropped calls? Would appreciate anyones advice or opinion.

Will 6gb of music slow down my Iphone 5?

I don't wanna know how much music it can hold max. I just wanna know how much music I can put until the 32gb Iphone starts being slow. If i have 6 gb of music will it slow it down at all.

Unlock my iphone 5 to use with tmobile?

I have an iphone 5 that i got from at&t but now i want to change to tmobile does anyone know how to unlock it so i can use it with tmobile with out having to pay?

Should i take off the plastic sticker on the back of my iphone 5?

I've have my iphone for 3 months and i'm not sire if i should take off that sticker on the back of my iphone 5 (you get them when its brand new). Its starting to peel off at the bottom but it hasn't on the top. Also i feel like its making the back of my iphone very hot. What should i do?

What is the cheapest, most reliable iPhone plan?

I'm probably getting an iPhone 4S soon and I'd like to know which service provider is the most reliable in terms of expenses and how the quality of the plan is. I don't talk on the phone much so I don't need alot of minutes. I need unlimited texting though. I'm an avid texter ^_^ I don't really need much data because I'm usually in a place with Wi-Fi. My mom said to look into no contract phones; can someone explain that to me? Thanks! Oh, and I was looking for a plan less than $60.