iMessage sometimes doesn't deliver to iPhone
I have 3 Devices with iMessage turned on. I noticed that sometimes I get iMessage through iMessage on my Mac and on my iPad but not on my iPhone. It's very annoying because sometimes I think people aren't answering me back but actually they did, it's just that the message didn't get through on my iPhone.
These 3 devices are all set in the same way, I checked all the settings so I wonder what the problem might be....
iPhone 6, iOS 8.3, null