yes .
Yes or public wifi
Yes, you do. Unless you have an iPhone with connection.
No, unless you are streaming it from a site or app such as YouTube
the best way is to use the find my iphone app
There is no way to do that. If you jailbreak your iPhone there is an app on Cydia that does that.
yes, you can just use wifi access to use the Internet on your iPhone
No, being on an app does not use minutes.Yes, it does
There are a lot of People Search Engines in Internet, try to use them. If you have Iphone i recommend SocioSpy: people search app
NO
Yes, you can use WhatsApp Web with an iPhone. To do so, open the WhatsApp app on your iPhone, go to "Settings," then select "Linked Devices." From there, you can scan the QR code displayed on the WhatsApp Web page in your browser. Make sure your iPhone is connected to the internet for it to work.
You use the iPhone 5 compass built-in app to understand your weather and trends in stock markets.