the iPhone uses cell towers for all communication and satellites to receive the GPS signals
so, both.
The iPhone does not connect to satellites. It uses cell tower triangulation.GPS does not mean satellite.
iPhone 1st generation does not have built in GPS, but iPhone 3g has a built in GPS module. However, when GPS is not available, iPhone 3g will also use cell towers to triangulate your approximate location.
All cellular data networks rely upon cell towers. Mobile devices are not equipped with the proper radios or devices to "talk" to satellites. Functions like GPS are still "assisted," meaning that the satellite refers data to the cell tower which in turn sends data to the mobile device.
I use artifical Satellites for making phone calls on my cell phone, and for navigating through unfamiliar cities with my GPS.
Because they use cell towers to transmit calls.
Radar communication is electronic communication without the use of wires. Radar communication can be between a ground terminal, like a cell tower, and a satellite. Or it can be between ground towers and also between two or more satellites.
Yes they would. Most walkie-talkies use simple transmit and receive circuits. They would certainly work over a limited distance. However - if greater range were needed, the signal would rely on a system of relay towers.
No. You only need to unlock an iPhone if you want to use a different cell phone company with your iPhone.
Not so far. There are no cell towers or relay stations on Mars.
Verizon, Sprint, and AT&T
She has an iPhone!
He uses an iPhone, I think it's the iPhone 4 :)
signals and contactsand transponder such as radio towers and gas stations