I'm going to the states for a total of 5 days and want to take my phone just for an emergency. I looked at the roaming charges and add-ons koodo offers and was thinking I would go for pay-per-use. Before I do anything though I want to know if I'm going to get charged just by having my phone on (not on airplane mode), even if i never make a call, use data, or send a text. ex. If I sent 1 text, I would only get charged $5.