We have an iMac in the bed room. Today I woke up extremely early so I went outside the bed room to play with my iPhone. Three times during the night my SO woke up and told me to put the bright iMac screen to sleep. Somehow it woke up from sleep and displayed the login screen. - My Apple Watch can login to my iMac, but I did not wear it. - The iMac and iPhone are both on latest OS, on same wireless internet, and within Bluetooth range. - I didn't do anything special on the phone, just played around with various apps like reddit, safari, twitter etc. Is there any known reason why an iPhone can spontaneously wake up an iMac? I love the macOS sleep mode and don't really want to turn the iMac off every night.