Where should I buy a used iPhone 4?

I'm looking at craigslist & ebay. I met with someone from craigslist and I checked the phone (looked for water damage, scuffs, if it connects Wi-Fi, etc).It looked alright and fine and he talked a lot about phones and my current one and I asked how he knew all this and he told me he worked at Verizon. He is selling the phone for $300! Just for the phone and charger and a rubber case. I think that it works well and if he scammed me I know where he works…

Then I'm looking on eBay and I know that they try to eliminate scammers. It seems cheaper on there but a lot of them do not mention if there's or isn't water damage, if it functions 100% correctly… Etc. But I have seen people on there win iphone auctions for around 200 with a charger and box and all that…

Opinions? The craigslist guy I met seemed alright I met his kids & wife, saw what he drives, know where he works, etc. But he doesn't want to give out his cell phone number so we keep communicating through email. & I find t weird that he is selling a used iPhone for $300 because he probably got it cheap from his work.

Iphone can't connect to Wi-Fi? - 2

My iphone 4 running on version 6.1.3 suddenly stopped automatically connecting to my home Wi-Fi. My laptop is connected fine though.every time i click it says unable to connect. So far i have:
-turn Wi-Fi on and back on
-turned my phone off completely and back on
- pressed forget this network
-pressed reset network settings

now i have to re enter my Wi-Fi password.still unable to join network even with correct password. I'm not sure what to do now

My Iphone 4s was stolen, It's turned off, what should I do?

I had Find my Iphone turned on, and location services, also cellular data. I have a pass code so it's not like he can mess with the settings. The problem is it's turned off. Is there any way to track it from its last known location? Track it while it's off? What should I do?

Where can I buy an iPhone 3GS?

I need a reliable place to get an iPhone 3GS from. You see, my mum wants one for her birthday and I have looked on eBay, Amazon, and other places and they don't seem very reliable.
Do you know any reliable places to buy one?

How much does an iphone 4 sell for?

I want to sell my iphone 4 because I have a new phone, but do you think it's worth it? I mean… How much would I be able to get for it? The phone is Sprint and have no damage to it. Which place would be best to sell it at?

Am I all set for IOS 7 and how long will it take for me to download it?

When I download IOS 7 this fall if Will i have to login to my apple ID once it's ready on
my Iphone 4S and redownload my apps and music from going in to ITunes App Store from the iPhone or will everything be there one te download is done and how long will it take to download it? Once again only answer if you work for the apple company not from the store

How to add a background to a photo?

I would like to add a one color background to my photo, i've seen on instagram many people putting a background to their picture so the whole picture could fit, is it an app on iphone? Is it any app?

What's a good word to put on a ribbon?

I'm designing an iPhone case for a friend and it's basically a doodle of a ribbon. One of the strands goes down to the bottom and as it goes down, it gets bigger as if it was coming towards you. I want to put a word on that strand but I'm not sure what, any ideas? This may be a weird question but I'm really stuck.

SOMEONE CALLED ME ITS UNKNOWN CALLER HOW DO I CALL HIM/HER BACK?

Okay so i think someone is pranking me i dunno who the *** is he.but. I just wanna call him back. And know his number to make sure he's one of my friends? But i can't call him back and i can't see his number because on my iphone 4 which i'm using doesn't come with a display name. So everyone who calls me is unknown is there a way that i could call them back or maybe get their number

Get the iphone 5 or wait for 5s/6?

Okay, so my birthday is November 11th and I'm DESPERATELY in need of a new phone. The one I have is completely and utterly worthless. The external keyboard in ripped of, the screen in scratched an the camera is basically in a dying hole.

I'm due for an upgrade at the end of August, and I'm considering getting an iphone.

My two bro's have iphone 4s's, and they seem great. I'm wondering if I should get the iphone 5, or get the 5s/6. I've heard rumors that the 5s should come out in June but that never happened. Hopefully it comes out soon?

Also, I dunno if I should just get a different phone entirely (ex.galaxy, android, etc etc)

What do you guys think?

Added (1). Kenton: Well, I would mostly just use it as an "all around-er" I text a lot, but I also am not home often.So, like you said, I would probably also use it as a mini computer.