How many generations of iPhones are there?

There are currently eight generations of iPhones… Original iPhone, iPhone 3G, iPhone 3GS, iPhone 4, iPhone 4s, iPhone 5, iPhone 5c, iPhone 5s… Hopefully the 9th generation iPhone will be released late 2014

Pangu says already jailbroken?

I downloaded Pangu and had Cydia on my iPhone but I deleted it. I want to re download it but whenever I try to jailbreak with Pangu, it says iphone already jailbreak. How can I fix this?!

How to import my videos & photos from my locked iPhone 4s?

I have BROKEN my front screen on my iPhone 4s, disabling capabilities to unlock my phone properly.

I want to know if there's anyway around it?

There has to be a way, or at least a way to get into my photos and videos manually.
someone help!

Added (1). FROM IPHONE TO MAC

NOT PC!

Nearly used all of my data?

I just got a message saying I've used 80% of my data and I don't get any more for another month, what do I do?! I've got an iPhone 5c that I've had for a week, i don't know what data is, I don't know how it gets used up and I don't know how to make my 20% last me another month, especially as I go on holiday next week?!

How too quickly and effectively loose weight?

I need to lose weight. I really don't feel comfortable. What''s the quickest and most effective way? Also I'm a teen and I don't really want my parents to notice I'm on a certain diet, I know you're gonna say I'm too young too diet "yadda yadda" but it is really knocking my confidence it's important okay?

Erase and sync on my iPhone?

Okay so i switched from a iPhone 4s to buying a iPhone 5s a few days ago. My iTunes library that had all my music on it was on my moms computer but I'm leaving for college in a few weeks so i need to transfer all my music to my mac. I backed up my phone on my mac and it showed all my music in my new library. I used to just use this free music download app and would never even use the computer to sync and download music and not have to worry about iTunes at all but the app i used completely changed and i can't seem to find a good app that lets me download songs that doesn't use sound cloud cause sound cloud sucks. So because of this i decided to try and do this all on the computer like i used to. I took a couple songs from youtube and transferred them to mp3 and put them into my new iTunes library on my computer along with all the songs i already had from my old library as well. However when i tried to sync the new songs, it said that my music was synced with another library and that it would erase and sync everything. I figured that i would be okay since i was able to back up my music from my phone onto my new library but i don't know if all my contacts and pictures are backed up and I'm still scared to do the "erase and sync" option in fear that it will complete wipe out my phone and i don't want that. So can someone tell me what to do? Or can someone tell me a good free music download app that has a browser that allows me to be able to go on mp3 skull and get music like that?