photo credit LG
This new smart phone for people with BOTH hearing and vision loss is affordable at the cost of only $30.00. http://reviews.cnet.com/8301-6452_7-57588016/lg-optimus-f3-a-$30-android-phone-for-blind-hearing-impaired/
While the phone is available at a reasonable cost, not everyone can afford wireless service and equipment. There is also communication equipment and funding available for Deaf/blind Pennsylvanians through http://www.icanconnect.org/ at no charge.
Please note that only Pennsylvanians who have BOTH, hearing AND vision loss are eligible to apply.
To find out if equipment and service are available to you in your area, call your state PUC office and get connected. The links I posted above are for the state of Pennsylvania only.