The frustrating Shizuku failure is not a clean error. It is seeing “running,” opening an authorised app later, and finding that the connection has apparently vanished.
Before pairing again or clearing data, identify what actually stopped. A dead Shizuku service, one revoked app permission and expected post-reboot behaviour are different problems.
Three failures that look similar
After a reboot: an ADB-started Shizuku service has to be started again. This is a platform limitation documented by Shizuku. Pairing is usually retained, but the service itself does not persist across a reboot.
During the same boot: inspect wireless debugging, Wi-Fi changes and aggressive background management.
Only one app fails while Shizuku is running: check that app's Shizuku permission and compatibility instead of rebuilding the whole setup.
Pairing is not the same as starting
On Android 11 and later, Shizuku can use Wireless debugging. Pairing authorises the connection; starting launches the service through that connection. The pairing port and the connection port can be different.
After a successful code, return to Shizuku, tap Start and confirm that its home screen reports a running service. “Paired” is an intermediate state, not the finish line.
A low-risk troubleshooting order
- Check Shizuku's own status and its authorised-app list.
- Confirm the phone is still on Wi-Fi. Switching networks or cycling Wi-Fi can end the debugging session.
- Inspect the Wireless debugging switch itself, not only the main Developer options toggle.
- Turn Wireless debugging off and on, then try Start again. This is the official first recovery step.
- Pair again only when the stored pairing is genuinely rejected.
- Exclude Shizuku from unusually aggressive battery, freeze and cleaner rules.
Why a network change matters
Wireless debugging exposes a local debugging connection whose port and availability can change. Some devices close it after a network switch, a long idle period or an OEM policy decision. A setup that works at home and fails on a school network is not automatically a broken Shizuku update.
Common wrong turns
- Clearing app data removes useful authorisations and rarely belongs at step one.
- The pairing port should not be reused blindly as the connection port.
- Disabling broad security controls to keep one service alive expands risk unnecessarily.
- Wireless debugging still depends on local networking even when Internet access is not the point.
Useful alternatives
A USB ADB start can separate a wireless-network problem from a Shizuku problem. Root start is available on rooted devices, but rooting a phone solely for persistence is a much larger decision.
For a repeatable failure, record the phone model, Android and Shizuku versions, start method and first error. For browser-side diagnostics, see mobile web debugging without guessing.
Reference: official Shizuku setup guide