Can you unlock a iphone 5? UK?

Can you unlock a iphone 5 which is on orange?
I remember a while ago when the EE network was introduced that i couldnt unlock the iphone but is it possible to unlock the phone to all networks now?

Do notifications use lots of data on iphone?

I wanna turn on notifications for facebook messenger and whatsapp so I can get the messages as soon as they're sent. However, I don't know how much data are they going to use. Are those apps constantly refreshing to check for new messages or they work in another way?

Candy Crush Saga Boosters Cheat or Candy Crush Saga Boosters Hack?

I've been on a mission looking for a way to cheat boosters on the candy crush saga app for free. I see a ton of candy crush saga cheats and hacks that claim to cheat you free boosters but can't seem to get one to work on my iphone without having to be jailbroken first. I also have a ipad, does anyone know if there's is actually a candy crush saga boosters cheat that excists, that also works without jailbreak, i have searched everywhere and downloaded a ton of candy crush saga boosters hack tools but haven't had n e luck yet. I need lollipop hammer bad but don't wanna spend a bunch of cash, thanks for n e help

Privacy settings.iPhone

I installed the keek app on my iphone and went to add a profile pic on it when it asked to access my photos. My accident I pressed no! Now it keeps saying I need to change my privacy settings to put a profile pic up.

I went to settings. Privacy on my iPhone but keek is not showing up there. I've tried deleting the app and reinstalling it but that doesn't work. Also turned my phone off and on but nope.

How to unlock iPhone's country lock?

I got a present from my ant. Its an iphone she brought for me from canada. Its country locked so I can't use my sim it it, please help me, what should I do?

Added (1). P.S. I don't have money, so i want this to happen free.

Should I upgrade to an iPhone 5? - 1

I'm currently on a $30, 24 month contract with optus and have an iPhone 4S which I pay $18 a month for. I'm 1 year and 1 month through my contract and of course my iPhone decides to stuff up, with the warranty no longer valid. The Wi-Fi on/off switch has greyed out and therefore can't be turned on. I have tried so many things to fix it but nothing has worked. Going to go into an optus store this week to see how much it would cost to repair/replace. But I was wondering if anyone knows how I could go about upgrading to an iPhone 5 instead.
Would I be able to stick to my $30 contract and just pay more for the handset payments (and add the extra 12/24 months)?
Any ideas on how much I would generally have to pay?