Because twitter is mostly just plain text, the amount of data it uses will be very minimal. Even browsing the web won't use that much data, unless you're not on websites designed for a mobile phone.
Your biggest problem will be using Youtube and downloading music. With 500MB, you would hog up...
I believe international models use gsm, but you'll have to ask. If its GSM, she can buy a prepaid SIM card and use it for when she is here.
Net 10 is really good for prepaid. It will work with the iPhone 5.
Let me make this perfectly clear. There is NO untethered jailbreak for iOS 6.1.3. Every site that tells you that they can is a scam. They will either charge you money and you'll get nothing in return, or they will claim it's free, but you'll download adware.
The way they work is - you pay...
"we hate paying for limited data"...shocking! most of us get a thrill out of it.
Seriously, without knowing your location, we won't know if you even have coverage on either one. T-Mobile has way faster 3G speeds, and blazing fast 4G. But their coverage is much more limited.
Spring is more...
can anyone find one that works because ive been looking for a while and i can only find one on demonoid and you need to be invited for that so someone please help