Boost Mobile‘s Unlimited by Boost service is another good option when traveling in the US so long as you plan to stay in one place for the majority of the trip. The cheapest phone available is about US$30. A GPS-enabled phone starts at US$50. Both come with $10 in calling credits. Add US$55 per month for Unlimited by Boost and you’ve got unlimited calling within a defined geographic area (a small per minute roaming charge applies for calls made outside the home calling area). On the next trip, bring back the phone and pay only US$15 to reactivate it. So unlimited calling for up to a month can be had for US$70-85. This includes US national long distance but not long distance to any foreign location (such as Canada). If you’re a Canadian roaming in the US, that translated into less than one hour of roaming fees payable to a Canadian home wireless carrier.