Does the Captel by Spring work well? How do you feel about it?
Who do you mean by Spring???????????
There is a Wireless CapTel by Sprint for Android cell phones that have version 2.2 or higher of the Android operating system on then and are also in an area with 3G or faster service.
I have used the service on such a phone activated on Page Plus which uses Verizon towers. I am not a heavy uses but have been satisfied with what I have used.

IF internet went down, I would go for my smartphone which have 4g. Soon I will replace my HTC EVO for Samsung GalaxyIII which have 4G LTE so that I can use VP anytime and almost anywhere.