Do your kids have cell phones?
Yes, but they didn't get them until they started high school
If so, how old were they when they got a phone?
See above 
Do your kids have a texting plan?
Yes, but that just came about recently, and they are now 18, 18, & 21
Do any of your kids have a data plan (allows them to download apps, do email, surf the internet)?
Hell to the no!
How did you pick the cell phone your kid uses?
They were allowed to pick any of the free or free with rebate phones
Is there peer pressure for your kid to have a particular kind of phone?
Nope
Have you used or ever considered using one of those tracking programs like on Verizon Chaperone to track where your kid is?
No, but if they were younger again I would
Most Importantly - what kind of phone is your kid using right now?
One has a Samsung Propel, one has an LG flip..basic phone and the oldest has a Sony Slider because she's on lost phone #3