Talk via satellite
A satellite phone doesn’t depend on cell towers, so it’s more
reliable—in the mountains, on a cruise ship, even at the South Pole.
These phones cost $600–$1,500, so renting ($7–$20 a day plus airtime)
may be more practical than buying.
Pros: The signal is consistent; no roaming fees apply. These are recommended for travel to very remote places.
Cons: They work only outdoors, and are clunky, heavy, and expensive to use ($1–$2 per minute of airtime).