When I receive a long text message from someone, it gets split up by my carrier so while they typed it all up and sent it at once, I might get 5 or 6 separate messages. When this happens, my phone vibrates for like 30 seconds straight because Textra vibrates for each individual message that comes in. This is very annoying and can be very disturbing when you are ironically trying to use vibrate mode to remain discrete.

A better way to handle this would be to only vibrate or ring once when a group of messages from the same conversation are all received at once or in a very short period of time. That way, if I get 10 messages within 10 seconds, my phone only vibrates and rings once instead of for the next half minute. When I receive a group of messages all from the same contact, I don't need to be notified 10 times for each individual message; a single notification will let me know I have messages to check.

Hangouts successfully implemented this and could be used as an example of how this should be done.