I have tried to pair 2 different Soundlink Micro to my Hawei P20 through Bose Connect App and directly from the bluetooth menu of the phone and I can't connect neither of the 2 speakers.
The Bose Connect app detects both of the speakers, I start to pair it and the bluetooth light starts blinking blue, then blinking white and it stays that way. The app sends an error that something happened and then gives the option to try again and so on....
I alredy update the firmware to the latest update and nothing happened.
Sorry to hear you are running into these pairing issues. What version of Android is your Hawei P20 running? Have you tried pairing the Micro with another device to see if you get a connection and can stream audio?