While turning off their internet may limit your ability to monitor them in real time, any rules or restrictions that you have previously established will still be enforced. Regarding their live location, you may not be able to track their live location with just their GPS on, but you will receive a full report of their location history later. Also, there won’t be any problems tracking your child’s screen time, as all the data will be saved on their device cache and will transfer to you once the internet connection is restored.