One of the latest developments in mobile phone technology has come under fire in a new report.
It says people should hold off buying third generation (3G) mobiles because they won't be able to get a signal for them in some parts of the UK.
The phones allow people to do video messaging as well as everything else.
But 3G firms have criticised the report by consumer group Which?, with one company saying their phones work in 80% of the UK.
Which? said: "There are teething problems with 3G phones and coverage, so we recommend sticking with a 2G phone for the time being."
3G companies accused Which? of not fully understanding the market. They also dismissed claims that some of the 3G handsets are bulky.
"The handsets are slick and small," said one firm.