old folks and cell phones

my gran has a cell phone. i have no idea why as she has given no one the phone number (i have it but i dont think anyone else does), she dosen't answer it when i call it, and she has no clue how to do anything more than answer it.

now you're probably think thats as a good grandson, i should take it upon myself to 'train' her in the proper usage of said device. well i have. over and over again. it just dosen't stick. i love my gran to death. i'm closer to her than my own mother (thats a whole nother blog trust me). but there are some things that she just dosen't get. technology is one of them.

she needs a cell phone due to the fact that my grandfather (gramps) is recovering from prostate cancer and is still very weak at times. plus he has complications from heart disease and other issues. she frequently has to take him to the hospital for various reasons. so its good that she has a way to call for help if needed, while traveling.

my issue is she has a contract phone. basically she is just giving centennial wireless $40 every month for nothing. she dosen't use the phone. so today i told her that at the end of her contract she should ditch them and get a pre-paid phone. that way she controls how much she spends each month. and the phone is gonna be at least the equal of what she has now, probably better! turns out, she's not on a contract (thank God), so when she pays her bill this month she's gonna cancel it. then we are going to walmart and pick out a new prepaid phone for her. any suggestions? i'm thinking something simple like trac phone or maybe cingular go phone. help a brother out LOL