Utah has a jurisdiction-wide ban on using a hand-held cellphone while driving, though drivers may use a headset or other hand-free communication device.
A driver may be pulled over for reading or writing a text message while driving, but the officer must have another reason to stop the operator for speaking on a mobile phone.
The offense in Utah is called "careless driving," which is a moving violation and includes other behaviors of a distracted driver, such as eating, drinking, or smoking.