A long press on a Tile will ring your iPhone if it’s close by. There’s no button on the AirTag.
From Tile Support > How Tile Works:
You can use your Tile to find your phone — even if it’s on silent mode!
- First, make sure that the Tile app is running in the background of your phone, and that your phone is in range of your Tiles.
- Next, quickly double press the Tile button to make your phone ring.
- You’ll see a notification on the lock screen of your mobile device, letting you know which Tile you rang your device from.
My take: You can do the same with your Apple Watch, but not everybody here wears one. Hanging on to my family’s Tiles, for now.