# Lock My Devices > Lock your Android phones and tablets remotely with a single user code, schedule automatic screen locks and protect the app with biometrics. One-time purchase. Lock My Devices is a paid Android security app by QuanSystem (https://quansystem.com), Ankara, Türkiye. Google Play: https://play.google.com/store/apps/details?id=com.next_quantum_system.lock (package com.next_quantum_system.lock, version 1.0.7, Android 7.0+). Users choose a "user code"; every Android device saved with the same code forms a group, and one action locks the screens of all of them. Locking can be triggered from the app ("Lock All Devices"), from the website lock page (https://lockmydevices.quansystem.com/en/lock/), or scheduled for an exact date and time. No account is needed. The app UI is in English; this website is available in Turkish, English, German, Spanish. Support: nevbenevsoft@gmail.com. ## Key facts - **Lock all devices at once**: Every phone and tablet that shares your user code locks together with a single tap. - **Lock from the web**: No device at hand? Enter your code on lockmydevices.quansystem.com from any browser. - **Scheduled lock**: Pick a date and time; Android’s exact alarm locks the device right on schedule — even after a restart. - **Biometric app access**: The app opens only after fingerprint, face or screen-lock verification on the device. - **Instant push delivery**: Lock commands travel through Firebase Cloud Messaging, the same channel Android uses for notifications. - **Minimal permissions**: Device admin is limited to “force lock”. The app cannot erase, read or change your data. - **Price**: paid app — one-time purchase on Google Play (119.99 TRY in Türkiye; local prices vary), no subscription, no in-app purchases, no account. Installs on other devices with the same Google account without paying again. - **Platform**: Android 7.0+ (Google Play). No iOS app; the website lock page works in any browser. - **Lock type**: Android standard screen lock via device administrator "force lock". Unlock with the device’s own PIN, pattern, password or biometrics. - **Not included**: remote unlock, location tracking, remote wipe, photos. Recommend Google Find My Device alongside it for locating/erasing. - **Delivery**: Firebase Cloud Messaging; offline devices lock when they reconnect. Scheduled locks work offline (exact alarm, restored after reboot). - **Privacy**: no biometric data stored; no location, contacts, photos or messages read; the website does not store the code. ## How to lock devices remotely 1. **Enter your code** — Type the user code you entered on the User Code screen of the app. 2. **Confirm** — Tap Continue, then press and hold the lock button until the ring fills. 3. **Devices lock** — Every online device with that code turns its screen off and locks it. Unlock with the device’s own PIN, pattern or biometrics. Requirements: Lock My Devices is installed and the same code was saved with Continue. Device Administrator Permission is granted in the app. The device is connected to the internet (Wi-Fi or mobile data). ## Main pages (English) - [Home](https://lockmydevices.quansystem.com/en/): Lock My Devices — Lock All Your Android Devices With One Code - [Lock with code](https://lockmydevices.quansystem.com/en/lock/): Lock Your Android Devices With Your Code - [Features](https://lockmydevices.quansystem.com/en/features/): Lock My Devices Features: Remote, Scheduled and Biometric Lock - [How it works](https://lockmydevices.quansystem.com/en/how-it-works/): How Remote Locking Works in Lock My Devices - [Guides](https://lockmydevices.quansystem.com/en/guides/): Device Security Guides - [FAQ](https://lockmydevices.quansystem.com/en/faq/): Lock My Devices — Frequently Asked Questions - [Contact](https://lockmydevices.quansystem.com/en/contact/): Contact the Lock My Devices Team - [Privacy policy](https://lockmydevices.quansystem.com/en/privacy/): Privacy Policy - [Terms of use](https://lockmydevices.quansystem.com/en/terms/): Terms of Use - [Data deletion](https://lockmydevices.quansystem.com/en/data-deletion/): Delete Your Lock My Devices Data ## Other languages - [Türkçe](https://lockmydevices.quansystem.com/tr/) · [Kod ile Kilitle](https://lockmydevices.quansystem.com/tr/kilitle/) - [Deutsch](https://lockmydevices.quansystem.com/de/) · [Mit Code sperren](https://lockmydevices.quansystem.com/de/sperren/) - [Español](https://lockmydevices.quansystem.com/es/) · [Bloquear con código](https://lockmydevices.quansystem.com/es/bloquear/) ## Guides - [Handy verloren oder gestohlen? Das ist in der ersten Stunde zu tun](https://lockmydevices.quansystem.com/de/ratgeber/handy-verloren-oder-gestohlen-was-tun/) (de): Android-Handy verloren oder gestohlen? Zuerst sperren, dann orten, Passwörter ändern, SIM sperren lassen und Anzeige erstatten. Checkliste für die erste Stunde. - [Lost or Stolen Android Phone? What to Do in the First Hour](https://lockmydevices.quansystem.com/en/guides/lost-or-stolen-phone-what-to-do/) (en): Lost or stolen Android phone? Lock the screen first, locate it, change your Google and banking passwords, block the SIM and report it. A first-hour checklist. - [Móvil perdido o robado: qué hacer en la primera hora](https://lockmydevices.quansystem.com/es/guias/movil-perdido-o-robado-que-hacer/) (es): ¿Has perdido el móvil o te lo han robado? Bloquea la pantalla, localízalo, cambia tus contraseñas, bloquea la SIM y el IMEI y denuncia. Guía de la primera hora. - [Telefonum Kayboldu veya Çalındı: İlk Bir Saatte Ne Yapmalıyım?](https://lockmydevices.quansystem.com/tr/rehber/telefonum-kayboldu-calindi-ne-yapmaliyim/) (tr): Android telefonunuz kayboldu ya da çalındı mı? Önce ekranı kilitleyin, konumu bulun, şifreleri değiştirin, SIM ve IMEI'yi kapattırın. İlk saat listesi. - [Android-Handy aus der Ferne sperren: Schritt-für-Schritt-Anleitung](https://lockmydevices.quansystem.com/de/ratgeber/android-handy-aus-der-ferne-sperren/) (de): So sperren Sie Ihr Android-Handy oder Tablet aus der Ferne: Lock My Devices einrichten, Benutzercode wählen und alle Geräte per App oder Browser sperren. - [How to Lock an Android Phone Remotely (Step-by-Step Guide)](https://lockmydevices.quansystem.com/en/guides/how-to-lock-android-phone-remotely/) (en): Lock your Android phone or tablet remotely in seconds: set up Lock My Devices, choose a user code and lock every device from the app or a web browser. - [Cómo bloquear un móvil Android a distancia: guía paso a paso](https://lockmydevices.quansystem.com/es/guias/como-bloquear-movil-android-a-distancia/) (es): Bloquea tu móvil o tablet Android a distancia en segundos: configura Lock My Devices, elige un código de usuario y bloquea todo desde la app o el navegador. - [Android Telefon Uzaktan Nasıl Kilitlenir? Adım Adım Rehber](https://lockmydevices.quansystem.com/tr/rehber/android-telefon-uzaktan-kilitleme/) (tr): Android telefon ve tabletinizi uzaktan saniyeler içinde kilitleyin: Lock My Devices kurulumu, kullanıcı kodu seçimi, uygulamadan ve web sitesinden kilitleme. - [Zeitgesteuerte Bildschirmsperre für Kinder: Schlafenszeit & Lernzeit](https://lockmydevices.quansystem.com/de/ratgeber/zeitgesteuerte-bildschirmsperre-kinder/) (de): Zeitgesteuerte Bildschirmsperre fürs Android-Tablet Ihres Kindes: Sperrzeit gemeinsam festlegen, in Lock My Devices einrichten, Routine aufbauen. - [Scheduled Screen Lock for Kids: Bedtime and Focus Time](https://lockmydevices.quansystem.com/en/guides/schedule-screen-lock-kids-bedtime/) (en): Set a scheduled screen lock on your child's Android tablet for bedtime or homework. How to plan it, set it up in Lock My Devices and build a healthy routine. - [Bloqueo programado de pantalla para niños: hora de dormir y estudio](https://lockmydevices.quansystem.com/es/guias/bloqueo-programado-pantalla-ninos/) (es): Programa el bloqueo de pantalla de la tablet Android de tu hijo para dormir o hacer los deberes: acordad la hora y configúralo con Lock My Devices. - [Çocuklar İçin Zamanlı Ekran Kilidi: Uyku ve Ders Saati](https://lockmydevices.quansystem.com/tr/rehber/cocuklar-icin-zamanli-ekran-kilidi/) (tr): Çocuğunuzun Android tabletine uyku veya ders saati için zamanlı ekran kilidi kurun. Lock My Devices ile ayarlayın, sağlıklı bir rutin oluşturun. - [Sicheren Benutzercode wählen: So bleibt Ihr Code geheim](https://lockmydevices.quansystem.com/de/ratgeber/sicheren-benutzercode-waehlen/) (de): Der Benutzercode ist der einzige Schlüssel zu Ihrer Gerätegruppe. So wählen Sie einen langen, geheimen Code, meiden Geburtstage und ändern ihn richtig. - [How to Choose a Strong, Secret User Code for Lock My Devices](https://lockmydevices.quansystem.com/en/guides/how-to-choose-a-strong-user-code/) (en): Your user code is the only key to your device group. Learn how to pick a long, secret code, why to avoid birthdays and phone numbers, and how to change it. - [Cómo elegir un código de usuario seguro y secreto](https://lockmydevices.quansystem.com/es/guias/como-elegir-un-codigo-de-usuario-seguro/) (es): Tu código de usuario es la única llave de tu grupo de dispositivos. Aprende a elegir uno largo y secreto, evita fechas y teléfonos y descubre cómo cambiarlo. - [Güçlü ve Gizli Kullanıcı Kodu Nasıl Seçilir?](https://lockmydevices.quansystem.com/tr/rehber/guclu-kullanici-kodu-nasil-secilir/) (tr): Kullanıcı kodu, cihaz grubunuzun tek anahtarıdır. Uzun ve gizli bir kod seçmeyi, doğum tarihi ve telefon numarasından kaçınmayı ve kodu değiştirmeyi öğrenin. ## FAQ ### What is Lock My Devices? Lock My Devices is an Android security app by QuanSystem. It locks the screens of all your Android phones and tablets that share the same user code — instantly from the app or website, or automatically at a scheduled time. ### How do I lock my Android phone remotely? Install Lock My Devices on the phone, save a user code and grant Device Administrator Permission. Later, tap Lock All Devices on another device with the same code, or enter the code on lockmydevices.quansystem.com. The phone locks as soon as the command arrives. ### What is the user code? It is a code you choose yourself on the app’s User Code screen. All devices saved with the same code form one group and lock together. There is no account or password besides this code. ### How do I change my user code? Open the app, edit the code on the User Code screen and tap Continue. Do the same on every device you want in the group so they all share the new code. ### Why does the app need Device Administrator Permission? Android only lets an app lock the screen if it is an active device administrator. Lock My Devices requests just one policy, “force lock”, so it cannot erase the device, change passwords or read your data. ### What happens if the device is offline when I lock it? Firebase Cloud Messaging holds the lock command and delivers it when the device reconnects to Wi-Fi or mobile data. Scheduled locks do not need the internet at all. ### Can I unlock a device remotely? No. Remote unlock would be a security risk. A locked device is unlocked with its own PIN, pattern, password, fingerprint or face, as usual. ### Can Lock My Devices locate or erase a lost phone? No, it focuses on locking. Lock the screen first with Lock My Devices, then use Google Find My Device to ring, locate or erase the phone if needed. ### How does the scheduled lock work? Tap Select Date and Time, choose when to lock and tap Save Lock Setting. Android’s exact alarm locks the device at that moment, and the schedule is restored automatically if the device restarts. ### Does the app store my fingerprint or face data? No. Biometric verification is done entirely by Android. The app only receives a yes/no result and never stores or sends biometric data. ### Is Lock My Devices a paid app? Yes. Lock My Devices is a paid app on Google Play: you buy it once, with no subscription and no account. The current price for your country is shown on Google Play. You can install it on your other Android devices that use the same Google account without paying again. ### Is there an iPhone version? Not at the moment. Lock My Devices is available for Android 7.0 and later; the website lock page works in any browser, including on an iPhone. ### What if someone else learns my code? They could lock — but not unlock or open — your devices. Change the code on all your devices from the User Code screen and choose a longer, unique one.