While more than 95 percent of parents choose to get their child a wireless device for safety, emergencies and to ensure they can reach them at any time, one in five haven’t set up rules for kids’ wireless usage, according to a recent national survey by Verizon Wireless.

According to the study, the number one rule parents set for kids is that they must answer the phone when mom or dad calls. In addition, parents often require kids to maintain good grades in order to continue to use their wireless device. The study found that inappropriate text messages and the importance of not texting and driving ranked low on the list of discussion topics.