Yes, you can use your cell phone if you are in range of a tower. But you should be aware that many people get hit with large roaming charges and international charges. You might call your carrier before you leave to get the breakdown for minute and roaming charges. Even if you get an international plan for the area you are going to, it could be quite costly per minute ($1—$3 per minute). (just think of how many minutes you talk per week). Still, these are usually cheaper than using the ship’s satellite phone, which could run you $6—$7 per minute.