Push notification not stabile
Push notification not stabile on iphones. All notification abilities switched on , however It may happen that you often miss the important message. We need a messanger like app to be 100% sure that new message will arrive and beep on phone. There is some bug in this this function as it not always work well.
Jarret Martynuik commented
This is also a problem on android Ive found. where the app will show a msg from an hr ago as the latest msg but there have been other messages since then. Slack and Hipchat both are better team apps.