Almost half of those surveyed said that if their mobile phone died they would only be able to remember three phone numbers - and more than 70% said they would give up having pudding after a meal in order to have a fully charged smartphone for a month.
Kevin Malinowski, a spokesman for mophie, said:
Millions of people rely on their smartphones daily to stay in touch with loved ones and do work on the move.
But all of these activities hinge on a single factor: having enough juice to keep the phones running.
A dead battery in a smartphone would cause more stress for nine out of 10 Britons, as daily activities hinge on a single factor "having enough juice to keep the phones running," says a report by smartphone case maker mophie.
According to the research, 92% of British people would feel stressed if the battery in their smartphone ran out, 61% said they would become frustrated, with 25% saying they would feel panicked.
Experts have suggested people should resist the urge of taking their devices to bed, and try to have set unplugged periods during the week.