Have you stopped to think how much private information you store on your phone? Youre not the only one: our smartphone is like the one ring of technology, a digital guardian of photos, messages, documents and much more. Thats why protecting access to apps with a password or biometrics has become essential to maintain privacy and prevent prying eyes. If youre wondering how to set a password for your applications on Android and iOS, here is a definitive, geeky guide to lock down your device no matter which operating system you use.
Options for blocking apps on Android
In the Android universe, the way to protect your apps can vary depending on the phone manufacturer and the system version. Did you know that brands like Xiaomi or Samsung include native features to lock apps from the system settings? You just have to go to the Privacy or Security section in the system settings. For example, Samsung phones include the useful Secure Folder, where you can move your critical apps and files so that only you can access them using a PIN, pattern or fingerprint.
If you have a Xiaomi with MIUI, just go to Settings > Apps > App lock, choose the apps you want to protect and set an unlocking method. On Huawei or Honor devices with EMUI, you will find a similar option under «Security» or «Privacy». Like having a little Fortress of Solitude inside your phone!
But what if your phone doesnt include these options? This is where specialized apps come into play. AppLock (by DoMobile Lab) leads the market after Norton App Lock was withdrawn, allowing you to protect any app with a password, pattern or fingerprint. Other popular options are App Lock (InShot Inc.) and AppLock Fingerprint (Locker), which even offer advanced features like automatic locking of new apps, restriction of WiFi connections and even intruder capture. That said, before choosing an app check its ratings and compatibility with your device.
How to password-protect apps on iPhone: iOS 18 and earlier versions
Apple users have seen their options to strengthen security evolve at the same pace as Apple Care plans. With the arrival of iOS 18, Apple allows locking individual apps from the home screen using Face ID or Touch ID. Simply press and hold the app you want to protect and select “Require Face ID” or “Require Touch ID”. That way, each time you try to open that app you will need to authenticate biometrically or enter your passcode.
However, if you have an older iPhone with iOS 17 or earlier, you can still set limits thanks to the Screen Time feature. Configure a minimal limit (like one minute) for any application from Settings > Screen Time > App Limits. Once that time is exceeded, you will need to enter the passcode to continue using it. This method is especially useful if you want to apply temporary parental controls or restrict access during certain hours.
For those seeking extra protection, there are also methods like Guided Access, ideal if you lend your phone to someone but only want them to use a specific app without snooping around the rest of the system.
Built-in methods and additional recommendations
Dont forget that some popular apps already include their own locking system. WhatsApp allows enabling exclusive access via fingerprint on Android or Face ID/Touch ID on iOS from its internal settings. In addition, you can set how often it will ask for authentication after closing the app. However, keep in mind that this type of lock prevents opening the app but does not stop replying to messages from notifications or receiving calls.
On both Android and iOS its important to choose strong passwords and not share them. Also, avoid installing external lock apps that are unreliable: although tempting, they may require dangerous permissions or even ask you for root/jailbreak (which completely weakens the systems security). Native solutions will always be the safest and most recommended by experts.
Putting a password on your applications is as essential today as having two-factor authentication enabled on your Google Drive account. Who wants to take unnecessary risks when its so easy to strengthen their privacy?
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