Another disadvantage of mobile phone use:
Long-term mobile phone users could face a higher risk of developing cancer in later life, according to a decade-long study.
The report, to be published later this year, has reportedly found that heavy mobile use is linked to brain tumours.
The survey of 12,800 people in 13 countries has been overseen by the World Health Organisation.
Preliminary results of the inquiry, which is looking at whether mobile phone exposure is linked to three types of brain tumour and a tumour of the salivary gland, have been sent to a scientific journal.