Did I Make a Mistake Giving My Maid a Smartphone?

I hired a male maid to manage our kitchen. After a week, he started asking for a smartphone. After a month, I gave him my old one. Today, he asked me to charge it. The phone was unlocked, and I saw a porn site open. Checked the browser—50+ tabs of adult content, entire history filled with it. He lives with us (me and my parents) And given him a separate room. Now I’m wondering—was it a mistake to give him a phone? Should I be concerned? Would you fire him? Looking for advice.