I switched over from Rogers to Koodo around 2 months ago. Lately a lot of people have been telling me that calls are going to straight to voicemail but when they call back right away it rings. I have noticed as well that I see missed calls but the phone doesn't ring. At first I thought I didn't hear the sound but now that I have paid more attention I have noticed that it just shows I missed a call. I attempted to recreate the problem and I just called myself from my work line and it went straight to voicemail and it showed that I missed a call but my phone didn't ring. When I called the a second and third time my phone rang. I have an iphone 6s unlocked (bought from apple) and I never had this issue before on rogers. I had turned off the phone, removed the sim but it didn't seem to solve the problem. I don't believe its the phone was I was using the same phone with rogers. I have had Telus in the past the service was really good, however I have noticed that the Koodo signal strength is not as good as Telus. The number of bars are lower than expected. I had higher bars on rogers. Its usually 3 or less bars of signal strength wherever I am. My assumption was that it would be higher than rogers.