Case study of Ada's day without a mobile phone: Ada accidentally leaves her bag on the bus on the way to a picnic with friends. Panics. Walks to park, borrows a stranger's mobile phone to find out where friends are. Friend arrives, can't lend me her phone, but gives me $5. Ada walks to bus stop to find phone number of bus company, then goes off to find public phone to call bus company. It's Sunday, so no one's staffing the phones. Ada hops onto bus and spends the last of her money buying a ticket while getting the bus depot's direct number off the bus driver, then borrows more strangers' phones for that purpose. the guy at the bus depot asks for my contact number and I go "uh... I don't have one any more." Squee!

Although I barely actually use my phone, hehe. I know people who still don't have mobile phones. *shrug*