How to wipe a broken iphone?

I broke the screen on my iphone 5s. I want to sell it to gazelle.com. But I want to make sure all of my information is wiped off of it first just to be safe. I can't go into settings and erase all the data that way since the screen is broken so is there another way? I know when the screen is on becasue the light stll comes out a little.

Does the Verizon iPhone 6 come unlocked and is it usable on CDMA and GSM networks?

I've been getting many mixed answerers from apple and a lot of other places online. I need an iPhone that can work on both GSM and CDMA networks. I switch between them a lot for work and I need and iPhone that can run on AT&T, Verizon, T-Mobile and internationally. Apple first said that only the Verizon iPhone can run on GSM and CDMA. Another time they said that all iPhone can run on all networks once unlocked and then a third time I get told no phone can run on both GSM and CDMA. If I purchase a full price iPhone form T-Mobile (T-Mobile will unlock it for me) can I plug in a Verizon sim and have it work fully? An employee I know at apple would give me a Verizon iPhone even though I purchased a full price iPhone if its actually the only one that runs on both GSM and CDMA networks. Will the Verizon iPhone come unlocked straight out of the box? Can I got to T-Mobile and plug their sim in the phone and use it like that and then over time activate it again under Verizon?

Should I go for an iPhone 6?

I've always been android. Never considered an iPhone. The only Apple product I've used are the iMacs at my college for sound lessons. I currently have an S2 (rooted with Cyanogenmod 11) and it's really showing its age. Are iPhones worth the high price tag? Would an Android power user be able to put up with Apple's restrictions?

From iOS 7.1.2 to iOS 8.0.2?

I'm a new iPhone user so please have some patience. And I got a iPhone 5S and I haven't updated to iOS 8 bc I didn't have the phone yet and there were a lot of complaints. So I still have the 7 and am wondering what would happen if I update it to 8.0.2?

Can I order the iPhone 6 online and go pick it up in the store if I'm under 18?

I went to the Apple Store yesterday and waited in line for 2 hours to get the iPhone 6, I finally was ready to get it at the front of the line and the guy told me I had to be 18 to purchase it in the store. I'm glad I waited 2 hours to find that out. Regardless, could I purchase the iPhone 6 online assuming that they have it in stock, (which they do), and then just go pick it up and have it activated in the store myself, under 18, or do I need someone over 18 there to do that (even the account holder)?

IPhone works but screen doesn't (still touch responsive)?

Okay, so I threw my iPhone 4s while it was wearing an otter box, so it didn't break, tho now, system sounds will still work, but the screen won't. I turned on "voice-over" by triple tapping the home button, and to my surprise, I could somewhat use the phone by listening to the voice-over assistant. There was a little dent in the side of the screen where I could slightly see into the phone, and I could see a little light when I "turned on the screen" (still wasn't working). Any ideas on what might have happened? I'm thinking that the screen connector may have come loose or something, since there's very little physical damage to the phone, and is fully functional aside from the screen not turning on.