In most countries of the world the answer is yes, it would be illegal to send sexually explicit material to a minor.
No, not if you're under 18. It's illegal.
7
No, it isn't.
aaron page
No. Assuming you have access permission, the user has chosen to allow you to view the photo. Saving the image is no different. If, however, you put the image online elsewhere, then you could be breaking the law, but that depends on your jurisdiction.
No you can take pictures
No! Sucks doesn't it.
UglificationInfinityInitiateInspirationFinishingUnificationFortificationWikipedia
Yes, http://radscans.blogspot.com/2008/01/julia-roberts-bikini-charlie-wilsons.html
how do regular cellphones send pictures
You can send pictures of an original iPhone the same way you can send pictures of just about anything.