How to Answer a Call 1. Be sure to get an analog cellular phone. Digital cellular phones are not TTY-compatible. Be sure to get a cellular phone that has a vibration signaler, vice just an audio ring. Be aware that cellular phone networks work very differently from a standard telephone line, and you may have connection problems that you don't have on a standard phone line.
Problems can include weak signal, disconnections, areas of no coverage, and static.
The best way to ensure that the cellular phone you buy is compatible with your TTY is to take your TTY with you and try it out before you buy a cellular phone.