I am onboard and I have Tmobile and Verizon phones with me. I left my Tmobile on so I hope that I won't have a huge bill for roaming. I have a telephone that no one (except the house sitter and our office assistant) knows the number of so that when I am traveling that I will not get unwanted telephone calls where I have to pay roaming yet people can still reach me. With phone plans so cheap, you can do a shared minutes plan and have second telephone numbers for an additional $10 per month
