47 C.F.R. § 14.61
(a) Accessibility. If on or after October 8, 2013 a manufacturer of a telephone used with public mobile services includes an Internet browser in such telephone, or if a provider of mobile service arranges for the inclusion of a browser in telephones to sell to customers, the manufacturer or provider shall ensure that the functions of the included browser (including the ability to launch the browser) are accessible to and usable by individuals who are blind or have a visual impairment, unless doing so is not achievable, except that this subpart shall not impose any requirement on such manufacturer or provider—
(b) Industry flexibility. A manufacturer or provider may satisfy the requirements of this subpart with respect to such telephone or services by—