What's the advantage of a satellite cell phone?

2- What's the walkie-talkie that you can talk and even the police can't listen the conversation?

3- What's a good cell phone? Motorola?

4- Apple has no advantage, why do people like it?

5- Are the Samsung that are not the S7 good? Like A3, J10 etc.

6- Can i enter in what's app, telegram by the computer? What would be the phone number?

7- 100mb of internet is like one month or one day? It's the same of see a video?

8-What's better t-mobile or at&t? We buy the chip in the store then we activate it and
do we have to send the id card?
Added (1). Thanks CrazyD. Answer as it was in Britain vodafone, virgin etc.

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