Premanand Maharaj Ji
How much should children use a mobile phone, and why is it a distraction?
Use the phone only as needed
The mobile is a big fault because we can see everything on it, and a restless mind goes to it. Use it only as much as truly needed, and keep a lot of control.
First, use the mobile only as much as is absolutely necessary. There is good in it too: you can listen to satsang and pass on necessary information.