From home to first destination
(including main location of employment) and from last destination back home is
considered commuting expenses which are nondeductible.
However, miles traveled between the
two (including toll charges) for business purposes are deductible..
You can deduct your cell phone usage for work, but do keep in mind that in the
event of an audit, the IRS may ask for written records
to distinguish between personal and business use for your phone.