A hardcore 11 per cent play for more than two hours a day.
New stats from Lightspeed Research confirm the ongoing rise of the mobile as a games platform.
It reports that 36 per cent of 25-34 year olds, 29 per cent of 35-44 year olds, 18 per cent of 45-54 year olds and 14 per cent of 55-64 year olds say their smartphone is the device they game on most often.
Mind you, for all the mainstream popularity of mobile gaming, it's still the fixed console that's the most popular way to play, with 60 per cent playing these in the past six months.
The figure for smartphones is 47 per cent.
Meanwhile the data showed 52 per cent of respondents have tried social gaming and Facebook remains the dominant platform, particularly for women (49 per cent compared to men at 37 per cent ).
Interestingly, these games are very popular with the over 55s. At 43 per cent they are more likely than any other age group to be daily social gamers.
One in five gamers has bought in-game credits or in-game items, increasing to a third of all 18-34 year old gamers.
Ralph Risk, marketing director for Europe at LightSpeed, said: “Gaming is no longer the preserve of the young: gaming has gripped people of all ages in the UK, whether on a dedicated console for a few hours, or for a few minutes on a Smartphone. More and more brands are harnessing the power of games to keep players’ attention for longer.”