I installed iOS 11.4 to sync my messages between iPad,iPhone and Mac. Is there an up date to the Mac for messages to be synced in the cloud with my other devices? I deleted a message on my iMac but it still shows on my iPad. What do I need to do to have the same messages on all devices including my Mac? Ok as an up date, messages is working on all my devices (iPhone, iPads). After installing the update you must go to iCloud in settings and turn on messages. After that it took a short while for everything to become synchronized. I had to plug in my iPads to get it to work. Now I’m just waiting for the iMac update.