I setup conditional access to block all countries except my given ones in AAD. everything seems work as expected. But, soon later, all our mobile phone's users got message mentioned their device has been blocked or quarantined to access server... etc. So I went to Exchange online portal, Mobile , Mobile device access, Quarantined Devices. They are all listed as quarantined devices. I tried to approved them. but no luck.
Called MS support, they instruct me to install Outlook for mobile. and it worked. but the built-in email app for iPhone or Android were left over and no access any more.
It's ok to use Outlook for mobile for emails but it doesn't sync the built-in calendar and contact. Any idea or solution?
Thanks.
Cliff
CliffZ