No i usually use the dead battery excuse. But ultimately letting someone borrow your phone is like handing them over your life. So much information is kept nowadays on your phone that it could ruin your life. Some people have nude pics, credit card/bank information or apps, email accounts, personal phone numbers of others, notes, map/gps tracking, home location, etc...
If someone needs to use a phone they better ask for a landline at an establishment or ask in a setting where they are not seen as a threat.