# Screen Off and Lock

> The app off and locks the screen

Canonical page: [https://chrome-stats.com/d/dev.qt.hdl.lockscreen](https://chrome-stats.com/d/dev.qt.hdl.lockscreen)

## Overview

- **ID:** `dev.qt.hdl.lockscreen`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Hoang Duc Lam
- **Category:** TOOLS
- **Downloads:** 1,928,083
- **Rating:** 3.80 / 5 (3,189 ratings)
- **Version:** 4.4.3
- **Last updated:** 2026-07-28
- **First published:** 2017-05-07
- **Publisher country:** VN
- **Size:** 18 MB
- **Data as of:** 2026-09-10
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=dev.qt.hdl.lockscreen)
- **Website:** [https://hoanglamqt.blogspot.com/](https://hoanglamqt.blogspot.com/)
- **Privacy policy:** [https://docs.google.com/document/d/1ynZNPyGk7LQxRUnsk1hs8SzcmBcTR3xg9bVb0VTUQ1w/edit?usp=sharing](https://docs.google.com/document/d/1ynZNPyGk7LQxRUnsk1hs8SzcmBcTR3xg9bVb0VTUQ1w/edit?usp=sharing)

## Description

**Screen Off and Lock** is a practical Chrome extension designed to help users turn off and lock their phone screens without repeatedly pressing the physical power button. This reduces wear and tear caused by frequent use of the power button, enhancing device longevity.

The extension offers two convenient launch icons: one to perform the screen off and lock function directly, and another for accessing settings and managing premium account features. It requires Device Administrator permissions to enable seamless screen locking and Accessibility Services API for fingerprint support on compatible phones.

Users can easily manage permissions and uninstall the app through device settings. By offloading the power button's workload, Screen Off and Lock provides a user-friendly and effective solution to protect your handset’s hardware while maintaining quick and secure screen control.

## Rankings

- #46,047 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.ACCESS_WIFI_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.SCHEDULE_EXACT_ALARM`
- `android.permission.SET_ALARM`
- `android.permission.SYSTEM_ALERT_WINDOW`
- `android.permission.USE_BIOMETRIC`
- `android.permission.USE_FINGERPRINT`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`
- `dev.qt.hdl.lockscreen.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

Overall, users find Screen Off and Lock functional and safe, with many praising it. However, recurring concerns include the expensive subscription model and desire for a one-time fee, ads or usage limits gating features, occasional reliability issues requiring reinstall, and a slow uninstall flow. Despite these drawbacks, the core function remains positively received.

### Pros

- Core functionality generally works (screen off/lock) for many users
- App is perceived as safe and useful
- Overall positive sentiment across reviews (frequent praises like very nice and good)

### Cons

- Expensive pricing and subscription model; many users prefer a one-time payment
- Features often gated by ads or usage limits, causing temporary non-functionality
- Reliability issues and reports of needing reinstall after problems
- Uninstall process can be slow or cumbersome

## Similar extensions and apps

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- [OFF (Screen Off / Screen Lock)](https://chrome-stats.com/d/us.stanwu.screenoff) — 301,710 users, 4.19 / 5
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- [Screen Off](https://chrome-stats.com/d/nl.matthijsvh.screenoff) — 6,809,427 users, 3.91 / 5
- [Lock Screen](https://chrome-stats.com/d/com.droidturbo.lockscreen) — 8,311 users
- [Screen Lock](https://chrome-stats.com/d/com.iglint.android.screenlock) — 6,973,133 users, 4.18 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/dev.qt.hdl.lockscreen)