Hi there! I see you mentioned that your phone is getting locked or freezing when using the Phone Doctor Plus app. Could you share a bit more about what exactly happens? For example, does your phone lock up completely, freeze on a screen, or something else? Also, is this happening right after opening Phone Doctor Plus or during a specific test in the app?

Meanwhile, here’s a general approach to address app-related lock issues on your phone:

1. Restart your phone: This simple step can often clear temporary glitches.
2. Clear the app cache/data: On your phone, go to Settings > Apps > Phone Doctor Plus > Storage, then clear cache, and if needed clear data (note: clearing data may reset app settings).
3. Check for app updates: Sometimes bugs are fixed in newer versions, so update the app via your app store.
4. Reinstall the app: Uninstall Phone Doctor Plus, then reinstall it fresh.
5. Check phone system updates: Make sure your phone's OS is up to date in Settings > About phone > System updates.

If after these steps the issue still happens specifically with Phone Doctor Plus, it might be a compatibility or deeper issue. In that case, I can help you check logs or provide alternative diagnostics tools. Could you also confirm your phone’s model and OS version?

Let me know what you observe, and I’ll guide you through the next best step!