openclaw - 💡(How to fix) Fix [Bug] Play Store Android app v2026.4.5 protocol mismatch against Gateway >= v2026.5.12 — clawx user report

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Google Play Android app (com.coderred.andclaw v2026.4.5) speaks gateway WS pairing protocol v3 only, while any gateway released since v2026.5.12 advertises probeMin=4. The pairing handshake fails with protocol mismatch.

Error Message

App shows: Connection Failed: Gateway error: protocol mismatch

Root Cause

Google Play Android app (com.coderred.andclaw v2026.4.5) speaks gateway WS pairing protocol v3 only, while any gateway released since v2026.5.12 advertises probeMin=4. The pairing handshake fails with protocol mismatch.

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Bug type

Regression (worked before, now fails)

Summary

Google Play Android app (com.coderred.andclaw v2026.4.5) speaks gateway WS pairing protocol v3 only, while any gateway released since v2026.5.12 advertises probeMin=4. The pairing handshake fails with protocol mismatch.

Steps to reproduce

  1. Install OpenClaw Gateway >= v2026.5.12 (or use ClawX which bundles it)
  2. Install OpenClaw Android app v2026.4.5 from Google Play
  3. Generate pairing QR via openclaw qr
  4. Scan from app and tap Connect

Expected behavior

App pairs successfully and appears in openclaw devices list

Actual behavior

Gateway logs: [ws] protocol mismatch remote=192.168.1.53 client=Xiaomi 15 Pro node v2026.4.5 min=3 max=3 expected=4 probeMin=4 App shows: Connection Failed: Gateway error: protocol mismatch

Environment

  • Gateway: ClawX (bundles OpenClaw 2026.5.12) on Windows 10 x64
  • Gateway bind: lan, port 18789, auth=token
  • Phone: Xiaomi 15 Pro, Android 16, Play Store app v2026.4.5

Additional notes

  • #84282 and #84287 were both closed by clawsweeper bot as duplicates of each other, leaving no open canonical thread
  • This affects ALL Play Store Android users trying to connect to any Gateway >= v2026.5.12
  • No v4-compatible Android APK appears to be published anywhere
  • Happy to test any pre-release Android builds

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FAQ

Expected behavior

App pairs successfully and appears in openclaw devices list

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