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SMS fails to send in certain locations


I have an Umi Max and am using the prepaid unlimited messaging plan. Fairly frequently I encounter an issue where all SMS messages fail to send. I go to school in London, Ontario, but am originally from Barrie. Last year and throughout the summer (where I was in both London and Barrie) I had zero issues with my phone, but last week when I returned to London I was having tons of issues with SMS failure. The problem doesn't happen all the time, but comes rather in spurts- an hour or two (or four) where I simply can't send messages. This is rather annoying as SMS is my main way of communicating with most people. This never happened in Barrie, nor did it happen when I was living in a different location in London last year. I have tried all of the obvious things: ensuring the cell radio is on, restarting the phone, removing and reinserting the sim card, even performing a factory reset. Any ideas what I should try next?

5 replies

Userlevel 7
According to the UMI website, the Max is missing a few frequency bands that Koodo uses. It's not fully compatible with networks here in North America. You may want to consider upgrading to a more compatible device.
Chad Burr wrote:

According to the UMI website, the Max is missing a few frequency bands that Koodo uses. It's not ...

Hmm, I hadn't considered that before. I forgot to mention this originally, but I can always receive SMS without an issue. Could the missing frequency support account for this?
Userlevel 7
Chad Burr wrote:

According to the UMI website, the Max is missing a few frequency bands that Koodo uses. It's not ...

Absolutely, Koodo (Telus) may upgrade or discontinue using frequencies in areas as the network gets continuously modernized.
Chad Burr wrote:

According to the UMI website, the Max is missing a few frequency bands that Koodo uses. It's not ...

Ahh, good insight, thank you! I suppose then that the fact that this issue only sometimes happens depends on what specific tower my phone is connected to?
Userlevel 7
Chad Burr wrote:

According to the UMI website, the Max is missing a few frequency bands that Koodo uses. It's not ...

I'd say that's a good assumption.

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