This should go over well.
The IRS can tax your company-issued mobile phone, via WaPo:
The debate stems from a 1989 law that requires workers who use company cellphones for personal calls to count the value of those calls as income and pay federal income taxes for the minutes used. Employees are supposed to keep detailed records of their calls. Now that sending e-mails on mobile devices is more prevalent, data charges could also be subject to scrutiny.