How to return a lost phone to its owner

By default, both iOS and Android let you access their digital assistants--Siri and Google Assistant, respectively--right from the lock screen (unless the phone owner has disabled the feature). To pull up the assistant on an iPhone other than the X, press and hold the Home button (for the iPhone X, press and hold the Power button instead). On Android, tap and hold in the bottom left corner of the display (where the microphone icon apppears) and then drag your finger up to the middle of the screen. Once you've accessed Siri or Google Assistant, try saying "Call mom," "Call home," or another command that might access one of the phone's owner's contacts. Siri also has a trick that Google Assistant doesn't: Ask "Whose phone is this?" to bring up contact details for the owner.