Mobile phone operators are missing an opportunity to sell high-cost multimedia mobile services because more than half their customers don't have a clue what phone they are using, according to research.

A survey of 761 mobile phone users aged 15 and over, commissioned from Ipsos MORI by LogicaCMG, found that 49 per cent of mobile phone users didn't know what model they use. A further nine per cent were unaware of the make.

Services firm LogicaCMG said this could mean mobile operators are losing money. If they knew what phones their customers were using, they would know what services they could try and flog them.

It might also suggest that mobile phone operators are not doing enough to track the make and model of users' phones.Or it could mean all the punters want to do is talk to somebody. ®