I know Rogers had this, where you can report if reception is bad. Well, I work at GE, 2300 Meadowvale Blvd L5N 5P9 and the reception is horrendous. I'm getting one bar if I'm lucky, my iMessage almost never works and SMS get sent as text messages, data/Internet is non-existent, and my co-worker with Telus gets full bars. i have an iPhone 5, and another co-worker with Rogers with an iPhone 4 is in the same situation with Rogers. The co-worker with Telus has an iPhone 4, therefore it is NOT an iPhone issue.
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Just came accross this post, wrote something today about that ......
Hope this helps, sorry its late!