There is excellent coverage on an Iridium satellite phone, where a regular cell phone wouldn’t normally have coverage. On the flip side, all satellite phones don’t work indoors, or in areas where there is tall buildings all trees.
The general rule, is that if you can see a clear line of sky, your satellite phone will work. Perfect for out at sea, on deserts, or on mountains – especially Iridium – our satellite network of choice – which has exceptional coverage – more so than any other network.