Android silent-ring rate hit 18.96% on 2026-05-11 — the single highest day in the trailing 90 days (+1.60pp vs 5/8 baseline). All 11 monitored corridors moved the same day. Real Grafana data. Investigation tracked in PB.
30-day evaluation (Apr 6 → May 6) of Zoom Video SDK Lite 2.4.6 as a P2P media layer. Paused 2026-05-07: POC measured 4.4–6.0 s joinSession; TestDevLab independently measured 5.6 s ringing on Zoom’s consumer app vs Botim 1.06 s. Three compounding blockers — connect time, Android minSdk 28 vs Botim 21 (~29K DAU lockout), and missing onQOSStatisticsReceived in Lite AAR.