Dear Microsoft Technical Support,
My customer have Exchange server 2013 Version 15.0 (Build 516.32) and installed roles (Mailbox, Client Access).
Any other devices can work without problems but Mobile devices Android version 6.0.0, 6.0.1 can't connect to an Exchange Server 2013 via the ActiveSync protocol.
You can help me to fix this issue and share mobile compatibility matrix.
Thank you.
Boongerd