The mobile reminders are all failing in the iPhone. The only ones working are the old ones, before the Next update. Please fix it!
I can't reproduce this issue, all reminders I've tested now arrived on time. Please tell me - what's the exact date and time of the task and of the reminder itself? Also, are you online when the reminder is due to arrive and are these tasks in shared or private projects?
I have the same problem...Mobile SMS does not work at all
Please go to Settings -> Reminders and edit your phone number. Make sure it's formatted like this +123456789, includes the + at the front, your country code, then (while in edit mode), select "International" as your carrier and one of the Canadian numbers from the "Number to send from" drop-down menu.
If that won't work, please send your full phone number to firstname.lastname@example.org and we'll send a test through our system.