Various BlackBerry models, the Samsung Instinct for Sprint and the iPhone are examples of cell phones that facilitate the quick and heavy use of text messaging. People who are hard of hearing often prefer to use their cell phones to text because their hearing aids create electronic interference issues.
Cell phones that feature a full keypad are considered user-friendly for people who are hard of hearing. BlackBerry Classic and Passport are two good models for people who are hard of hearing, as is the Samsung Instinct user-friendly.
Several Apple cell phones including iPhone 4s, iPhone 5c, iPhone 5s, iPhone 6 and iPhone 6 Plus are good mobile devices for people who are hard of hearing.