Turn the Planet Cosmo Communicator into a real Bluetooth keyboard for another device — relay its physical keys as live HID over Bluetooth. Offline, no app on the host, no root. Includes a low-latency (anti-Doze) fix.
Fix Planet Cosmo Communicator standby battery drain: cover-display wake lock keeps the SoC awake on firmware V19. Diagnosis + no-Windows V19→V23 fastboot upgrade guide.
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