You can add up to four fingerprint patterns for unlocking a Samsung Galaxy S10. Here's how to set up fingerprint scanning and add more fingerprints.

You can unlock your Android phone even if you've forgotten the passcode, but you'll usually need to factory reset the phone.

Even if you use a fingerprint or Face Unlock to secure your Android phone, neither of those methods can be used as the "main" security method. For example, when you restart your phone, it will require ...

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