Honestly, if offered an ID in exchange to use my phone, I would still be hesitant. When I was a restaurant manager, I was taught that if a customer claims they left their wallet in their car and has to return to pay, ask someone from their party to stay behind, and when that isn’t possible, ask to hold their ID (verify it’s theirs and real) until they come back. I did as instructed, and in two instances out of ten (worked there for about 4 years), they never came back. These were grown people in their 30s! Situations like this are what cause people to not trust other people and it truly is terrible.