Find out how you can set clear boundaries and rules around phone use for children under 12 years old, including ways to monitor and limit screen time. Most primary school children in Singapore are using mobile phones before they reach the age of 12. Here are 8 effective ways to limit their phone usage.   Set clear boundaries and rules: Establish clear boundaries and rules around the use of mobile phones for children under 12 years old, such as designated times for phone use and rules for appropriate use of the phone. Use parental controls: Use parental controls to limit access to certain apps, websites, and features on the phone.…