Disable (or Enable) child's smart phone internet from the parent's smartphone.
If you specify an Internet timeout schedule on your parent's smartphone, your child phone will only be able to use the Internet at that time
If child delete the app, you can check it on your parent phone.
When you start the app, you can choose whether to use it as a parent phone or as a child phone.
At the first run, you must enter the phone numbers of the two smartphones and set up the connection through the consent procedure.
When using this program, you must obtain the prior consent of the other party. You are solely responsible for any problems caused by improper use.
(Lollipop and later versions cannot block data networks, dialog message will be displayed continuously until they block it, preventing them from doing anything else.)