No.
You can use an iPhone without a plan. Know that in order to not use a plan on your iPhone, you must purchase an unlocked iPhone which is normally priced $450 USD more than its contract counterpart in Apple Stores, AT&T, Verizon, Sprint, etc. Of couse if you are already in a 2 year contract and your 2 years are up (or you pay a heavy fee to ditch your contract), your iPhone will not have a plan but will still be able to function like an iPod Touch. The last was to get an iPhone with no plan is to buy a used iPhone 5 from someone who's contract expired (which won't really be possible until fall 2014).
You need to use the program RedSnOw to jailbreak an iPhone 5.
You need to use the program RedSnOw to jailbreak an iPhone 5.
no you can use the mobile network for Internet
will an iphone 5 will use nfc
The price of an Iphone 5 depends heavily on the mobile contract you get with it and its storage capacity. For example, you can get an Iphone 5 with a wireless plan 16GB of storage for $199, while one with 64 GB and no wireless plan costs $899.
It should work for the Nexus 7, as it works for newer Android smartphones. As for the iPhone 5, you will need an adaptor to use a HML to HDMI as it doesn't use micro USB.
Yes, an iPhone 5 can be prepaid. You need to find a phone company that has prepaid plans.
To trade the iPhone 4 to get iPhone 5 you need at least $50.
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Overall the iphone 5 on a two year contract or the prepaid plan from Virgin Mobile may end up being very close in price. If you know you will like the IPhone and the service you should look into which plan would have better signal in your area. The better coverage would be the plan to choose.
You use the iPhone 5 compass built-in app to understand your weather and trends in stock markets.
You can use the same SIM card for your iPhone 6 that you used in your iPhone 5.