On the backend, OpenTelemetry is quickly becoming the default for observability but on Android, it’s still uncommon to see something else than Firebase or any vendor-locked solution. Many teams don’t know where to start or whether it’s “ready” for mobile use. The result: a production app that behaves like a black box, with only crash reports and a few logs to rely on when things go wrong. In this talk, we’ll turn a typical Android app into an “X‑ray friendly” client using OpenTelemetry. We’ll explore the available OpenTelemetry SDKs, wire them into a simple observability stack, and instrument a realistic user flow end‑to‑end. Along the way, we’ll discuss maturity of the tooling, and how it compares to popular mobile APM solutions. Attendees will learn concrete patterns and pitfalls so they can evaluate and adopt OpenTelemetry on Android with confidence.