16 Schools. One City.
Zero Phones in Classrooms.

The Challenge

Ho Chi Minh City, Vietnam's largest and most dynamic city, was facing a growing crisis in its classrooms. Smartphone usage among students had surged, with teachers reporting constant disruptions from notifications, social media browsing, and gaming during lessons. Attention spans were shrinking, test scores were stagnating, and the gap between engaged and disengaged students was widening.

School administrators knew something had to change. Traditional approaches, like verbal warnings, confiscation policies, and written rules, were inconsistent and hard to enforce. Teachers spent valuable instruction time policing devices instead of teaching. Parents worried about communication during emergencies. The city needed a solution that was systematic, fair, and scalable.

The Solution

In October 2025, the Ho Chi Minh City Department of Education partnered with ZenLocked to launch a phone-free spaces pilot program across 16 schools. The initiative was designed to test a simple, non-confrontational approach: lockable phone pouches that students use at the start of each school day.

How it worked

• Each student received a personal ZenLocked pouch at the start of the day
• Students placed their phones inside and the pouch was locked with a secure magnetic tag
• Pouches stayed with students throughout the day, so phones were always within reach for emergencies
• At the end of the school day, staff unlocked the pouches with a magnetic detacher
• The system was tamper-proof, fair, and applied equally to every student

The pilot covered a diverse mix of schools, including public secondary schools, semi-private institutions, and vocational training centers. This variety was intentional, the city wanted to validate results across different student populations, school sizes, and socioeconomic contexts.

The Results

Within the first month, all 16 pilot schools reported significant improvements across multiple metrics. The results exceeded expectations and provided the data HCMC needed to make a city-wide decision.

From Pilot to Policy

The data from the 16-school pilot was compelling enough for the HCMC Department of Education to take action. In early 2026, the city announced an official phone-free classroom policy, making HCMC one of the first major cities in Southeast Asia to formalize such a regulation.

Why Phone Pouches Work Better Than Bans

Many schools around the world have tried outright phone bans, but enforcement is the weak link. When schools rely on confiscation or honor systems, the burden falls on teachers, and compliance varies widely from classroom to classroom.

Lockable phone pouches solve this problem by making the system automatic and equal. Every student follows the same process. There is no confrontation, no negotiation, and no exceptions. Teachers can focus on teaching instead of policing devices.

• Students keep their phones with them, addressing parent concerns about emergencies
• The lock removes the temptation entirely, eliminating the willpower problem
• The system is visible and consistent, so students see it as fair
• Setup takes less than 2 minutes per classroom at the start of the day

What This Means for Schools Worldwide

The HCMC pilot program is one of the largest documented implementations of phone-free classroom technology in Southeast Asia. The results align with similar programs in the United States, Australia, and Europe, where phone pouches have consistently delivered measurable improvements in student focus and academic outcomes.

For school administrators considering a phone-free policy, the HCMC case study offers a clear roadmap: start with a pilot, measure the results, and let the data drive the decision. The transition does not need to be disruptive, and student adaptation happens faster than most administrators expect.