How to buy unlimited Wi-Fi for my iphone?

I don't understand how much money i need to top up, i'm on pay as you go and i want to have unlimited Wi-Fi (it doesn't have to be forever) , i don't know how to do this, please help!

Benefits of an iPad over iPhone/MacBook?

I already own an iPhone 5 and a MacBook Pro, but for some reason, my professors all advise that students buy an iPad. What are the benefits of this course of action? I don't quite know if this is worth spending so much money. It almost seems like they are pushed upon us by the university.

Added (1). (I'm a senior in undergrad)

Why does the brightness on my iPhone 5s dim randomly?

I've had my iPhone 5s since November and I've noticed that the screen occasionally dims a bit when it's on full brightness. It's not a huge issue at all, in fact when it dims it's barely noticeable, but it's just been annoying me lately. Does this happen to anyone else with an iPhone 5s? Other than this issue my phone is perfect.

Added (1). And I've also turned auto-brightness off so that's not the issue.

Something wrong with iphone five after getting wet?

My iPhone is finally back to normal after dropping my phone in the you know what. I soaked it in rice, and used the vac but now that its on i can't do anything and the corner that usually says verizon and stuff now says searching. Also the date says its december thirty first but its july twenty- second. Any help?

How to take cool photography with an iphone?

I was wondering what are some cool apps that people use to edit photos. They have to be free apps that are really good for editing photos. I don't really know what else to put in this little information box but I think this all makes sense and there's nothing else to say.

I dropped my iphone five c in the you know. And it?

Has been soaking in a bag of rice i also took the card out and also i used the vac and dryed the card with a hairdryer on the cool setting and when i charged it all that happened was the apple sign going on and off around every ten seconds or so. Any help?

Can 7.1.2 OTA be jailbroken with Pangu?

I have an iphone 4 ios 7.1.2 That i have upgrade OTA, i have never been jailbroken, but i have successful jailbroken my other apple softwares,

The question is, can i jailbreak an iphone 4 that has never been jailbroken on ios 7.1.2 using pangu latest version?