The illegality of using a hand-held mobile phone whilst driving is not without its reason, purpose or justification.
The use of a hand-held mobile phone distracts the drivers attention, and affects their ability to react where necessary. Some may feel that this is the same with alcohol use.
If a driver is caught driving being 1% over the legal limit, they risk losing their licence and potentially gaining a custodial sentence. However, looking at the way drivers handle their cars whilst holding a mobile phone to their ear leads this author to believe that the punishment for doing so should carry the same penalty as that of drink driving.
It is the opinion of this author that hand-held mobile phone use has increased since legislation was imposed, although maybe I'm just noticing it more. I personlly don't believe that people think that using a hand-held mobile phone whilst driving affects the way they drive, and that makes them all the more dangerous.
The thing is, most mobile phones nowadays usually come with a free hands-free kit included. Even for those that don't, hands-free kits - wired or wireless - are not at all expensive, and very easy to come by.
Disclaimer: I should say that the use of a mobile phone with a hands-free kit should not be taken lightly, as it can still distract the attention of the driver... so caution should be exercised.