Last month I while traveling in the US, I wasn't receiving all of my text messages. Messages originating in Canada were always received. However, most messages originating from US cell phones weren't received until I got back to Canada several days later. When my phone finally connected to Koodo's network while driving towards the border, I received the 33 texts I didn't get while traveling. I'm using an iPhone 4 and had purchased the 30-day US roaming add-on. Anyone else have this problem? Any ideas what the problem was?