Prepare Android Theft Detection Lock before carrying your phone outside

Android Theft Detection Lock tries to recognize movement consistent with someone grabbing an unlocked phone and escaping. If it detects a likely theft, it locks the screen. Google says the feature depends on device support and may avoid triggering under some conditions, including a stable wireless connection or repeated recent locks. Enable it as one layer before an incident, then build a plan that does not rely on a motion model making the right decision.

Before you start​

Set a strong screen lock of at least six digits or a password, and keep Find Hub working. Confirm your device model and Android version show Theft protection; some Android Go devices, tablets and wearables do not support these features. Keep Google Account recovery access on another device.

Do it step by step​

1. Open Settings, Google, All services, then Theft protection. On some phones the labels differ; use Settings search for Theft protection if necessary.
2. Locate Theft Detection Lock and turn it on if supported. A greyed-out control means the device does not offer that feature; do not install a random app promising to unlock hidden support.
3. Confirm the phone locks normally with the power button and requires your PIN or biometric after timeout. A motion-based feature cannot protect an unlocked screen that is deliberately left accessible.
4. Review nearby theft options, especially Offline Device Lock, Failed authentication lock and Remote Lock. They respond to different events and may need separate setup; one switch does not imply all are active.
5. Set up a recovery contact route for yourself: another trusted device or a secure way to reach your Google Account and carrier. Note your phone's model and identifiers separately for a theft report.
6. If the phone later disappears, use Find Hub or Remote Lock promptly from a trusted device, contact the carrier and inspect account activity. Do not wait for an automatic lock notification before acting.

Check the result​

The setting is On on a supported phone, the screen lock works, and you know the remote response path. A second device can reach the account without the missing phone.

If something goes wrong​

If the setting is absent, check model, Android version and manufacturer's help. If the phone locks unexpectedly during normal use, unlock it and check updates; Google says it continues tuning the detection to reduce interruptions.

Know the limit​

Theft Detection Lock is inactive when the screen is already locked and may not trigger every theft pattern. It does not locate, erase or recover the phone, and it cannot undo data already exposed on an unlocked screen. Keep physical awareness and account recovery in place. Google Android theft-protection limits