|Don't consign Granny to telegrams. Buy her a cell phone.|
In researching this subject, I was not surprised to find that modern phones confuse the elderly. After all, this is the generation that could not figure out how to program their VCRs when they were still in their 40s. What an Octogenarian needs in a mobile device is simplicity, large numbers, and good volume. They need a Contacts menu with few steps; two clicks away from the loved one they want to reach. And, they don't need a plan at all because they still use their house phones for everything (i.e. they need a prepaid plan).