Almost a fifth of over-65s think they use their mobiles too little.
Young people and women are most likely to think they spend too much time on their phones
Four in 10 say they use their phone too much - and, of those, 31% say they're doing something to try and reduce their phone use.
The survey by YouGov in the UK found only 17% aged 65 and older think they use their phones too much.
Almost a fifth of over-65s actually think they use their mobiles too little.