California's Proposition 103 does not allow car insurers to use telematics in ways other states may. Insurers cannot factor in your driving habits, such as when you drive, whether you brake hard or accelerate quickly or if you are speeding often, when pricing insurance. You do have the option of pay-per-mile insurance in California, which uses telematics.
The main factors that influence car insurance rates in California are motor vehicle record, number of miles driven annually and how many years of driving experience you have.