From the press release:
...battery life also influences the way people use their phone every day. More than one in ten say they run out of charge on their phone at least once per day and then have to wait to recharge it (12%) – a further 17% say this happens every few days.
With the majority of respondents rating the overall battery performance of their phone as poor or average (58%) and 59% having to recharge their phone at least daily (10% more than once a day, 49% once per day), it is clear that although battery life is a basic smartphone feature, it still has a huge impact on people’s perception of the overall quality of their phone.
More than half of all smartphone owners turn off wifi/Bluetooth when they don’t need them to save battery life (56%), while 49% turn off GPS services. Minimising screen brightness and the use of games or apps when out and about are also popular battery saving strategies, particularly with 18-24 year olds (brightness: 61%, minimising games/apps: 52%). One in five respondents also use a battery saving app.