Loss of phone "would cause huge disruption" to their lives.
Tennesse-based technology protection firm Asurion found that 32 per cent of mobile phone users aged 60-64 are very reliant on their devices.
The consumers said that their mobile was the primary means of contact and its loss "would cause tremendous disruption to my life", according to the report.
The results will likely come as a surprise to many as trends dictate that it's mostly the younger generation that can't go without their phones.
Bettie Colombo, spokesperson for Asurion, said: "When we envision the 'cell phone generation' most of us think about the teenage through college-age groups that have grown-up with cell phones.
"But our research disproves that assumption. As a nation, we're all coming to see the cell phone as an indispensable part of our lives."