Long and loud alert for iPhone
It sucks to miss important chats because I don't notice the alerts when out of office with only my iPhone connected to your system. I run a one-man company and quite often my only connection to chat is my phone.
If the incoming calls keep ringing loud until I answer, why couldn't the chats, which are often even more important?
Your desktop alert is good, long and loud but it is kinda illogical to have a louder alert on desktop, where you normally stare at the screen anyways, compared to a phone that is in your pocket often in noisy environment.
This is really important! The phone chat alerts should have a "forever" setting like the desktop version. And the volume needs to be turned up.