So far, I have tested them all (shown below) with a cellular. I wonder which one you have tried and like the best. If there are any others you like better than these, post here and I'm curious about them. How are their battery lives like? I know one of these I tested suck at battery life. Have you experienced with any of these TTY's? Others? What are their pros/cons as well? Please post your experience and share here. Thanks in advance.
TextLink TL9100M
found in Hitec
Q90®D
found in Ameriphone
Compact/C
found in Ultratec
TextLink TL9100M
found in Hitec
Q90®D
found in Ameriphone
Compact/C
found in Ultratec