Where are the tracking devices located in iPhones?

I need to know if the tracking device is located in the SIM card or if it is inside the phone somewhere. The reason I need to know would bring up a completely different story but if anyone could inform me then it would be greatly appreciated!

How to Cancel this ebay listing?

I have purchased an iPhone from someone on ebay and paid straight away. 5 days later they sent me a message saying that they did not list the item and i should open a case to get it back. The money has come out of my account so I'm worried about clicking cancel purchase as that is usually for people who haven't paid yet. And If I return the item what happens there. I'm worried this person could be dodgy. Can someone help.

What app for the iPhone to use when making year end collage?

I want to make a year end collage with about 50+ photos or something in that range (the more the better).Is there an app that allows me to do this? Been searching for one but all I can find are the apps that let you insert up to give or take 10 photos.

IPhone 4 value vs iPhone 4S?

I'm wanting to trade my AT&T 16 gigabyte iPhone 4 for an AT&T 16 gigabyte iPhone 4S in the same condition. I know the iPhone 4S is worth more than the 4 but by how much? For answer if you're just guessing because I can do that all day. Please only answer if you know what you're talking about. I just want to know how much cash to add on to make it a fair trade.

How to childproof my iphone 5c?

My wife and I recently got our son an iphone 5c for his birthday. We did all the basic restriction things such as blocking the app store, and adult content, etc. Etc. Etc. However, there's something else bothering me, we're a bit paranoid about strangers being able to call his number. Is there a way to black All numbers from being able to call or text his number EXCEPT for a few select phone numbers?

Please let me know what you guys can come up with.

Why can't I use my iphone without Wi-Fi?

I have an Iphone 5 with virgin mobile, and the only time i can use it is if I have Wi-Fi. For instance if I go out in public, I can't use Instagram or Vine, or any of those apps. Even thought i have excellent cell service. Is this the phone, or just simply the phone company? If it is the phone company can you maybe direct me to a good company that won't burn a hole in my wallet?