Serious problems with iOS 7.2?

I just updated my iPhone to the newest software update of iOS 7.2 last night. However since doing this my phone services (or lack there of) has gone to the ground. My phone either tells me i have no service and can't make calls or tells me i have full service - and i still can't make calls.

This is very bad for me as i live 260 miles away from my family and i'm really getting cheesed off with it!

Has anyone else had this problem?

Added (1). Turning the phone on and off doesn't work

I'm on 02 UK

Can i use a Tmobile Sim Card on a iPhone5 not activated yet?

Okay guys well i ordered and iPhone 5 from Walmart, so when i get it i will have to call to activate it with Straight talk but i don't want that, my question is If i don't activate it with Straight Talk can i use a Tmobile sim card so it can be on the Tmobile network? Will it work? :| help please

Added (1). Alright so lets say it is unlocked, i putthe Tmobile Sim card in the phone, and it says Tmobile as the sevice on top of the phone, does that seem like it would work?

How to get a book printed of an entire conversation from my iPhone texts?

Okay so I know this is possible. My roommate's ex boyfriend made her a book several years ago that was all of their text messages. I'd love to do that for my boyfriend for Christmas, but I can't find a way to do it with my iPhone. There's a great app just for that for Android, but there's not an apple version. My roommate doesn't have the book anymore, so we can't figure out where it came from. I've found ways to download a spreadsheet of all of your texts, but I'd like it to still be in "conversation" format, versus an Excel print out.
No, I don't want to take screenshots because I want to print all of our texts. I have never deleted the conversation window from my phone since we first started talking, and that was quite a while ago. We have who knows how many thousands of texts. So screenshots are just not feasible. I tried and tried to find a site that would make a book of them for me, but I can't seem to find one either. Any ideas? I know it's been done!

Person who stole my phone switched off FIND MY iPHONE

So my phone got lost last week tuesday and yesterday i got an email saying find my iphone has been disabled from your device! Also, the person who took my phone plugged it into a computer because i got an email saying a sound was played on your device and that we were unable to put your device on lost mode, because my phone had no connection at all this could only be done through Wi-Fi connection or plugged into a computer!

WHAT CAN I DO?

Best Iphone app for unfertile?

Right now the app I'm using is M. Cycles, and it works fine except that it has no option to track what days are my least fertile days, which I'm in most need of. Are there any apps that track that?

Added (1). Sorry, the title is supposed to say "best Iphone app for tracking non-fertile days"

I need a good gaming and streaming router?

Me and a friend of mine are rooming in a house together in about a month and we need a good streaming and gaming router. We plan to get Time Warner Cable internet at a speed of about 30 MBPS and we need a good router that can support streaming and gaming. It also needs to be able to handle multiple devices. The devices that I can know for sure that will be connected are: 2 laptops, 2 Xbox's, 2 iPhone's, and an iPad. We plan to have friends over so we may have a few more devices on the connection. Our price range is probably $100-$130. The streaming aspect will mainly be used for Youtube. Also we want one that has decent security settings but we don't need one that is over the top.

AT&T iphone to straight talk? - 1

Hi! I was wondering if I bought an iPhone off of the apple website, under AT&T service if after I bought the iPhone could I switch the SIM cards to one I got from Walmart's straight talk? Does my phone have to be unlocked? If so how do I unlock it? Has anyone ever done this?

I heard from a lot if people that AT&T and straight talk switched will work and you can go on the straight talk plan and I just wanted to be sure before I bought a phone I couldn't use. Thank you!

Added (1). I kind of don't want to buy an unlocked phone from the start, because they're at least $400 more.