Android is not exactly open source. Everything useful is bundled in Google play services. Almost all Android phones are not designed to be modified. Let’s say

Android is not exactly open source. Everything useful is bundled in Google play services. Almost all Android phones are not designed to be modified. Let’s say I buy a Samsung phone and find a bug that I want to fix. How do I do it? Can you walk me through it step-by-step at a high level? Also, you can release source code and still be monopolistic and abuse your competitive advantage. Chrome, Edge, and Safari are essentially open source but their competitive advantages come from being installed as defaults on their respective operating systems. They have an inherent competitive advantage over other open source browsers like Firefox (and the market share statistics prove it).