Skip birthdays and repeats. Use a six‑digit or longer code mixing patterns only you recall, like a path across the keypad described by a private phrase. Change it after travel or repairs. If shoulder surfers lurk, shield the screen, then enable auto‑lock with the shortest sensible timeout.
Fingerprints and face unlock feel effortless, but treat them like convenience with rules. Re-enroll prints after cuts, remove old faces, and disable biometrics when crossing borders or lending devices. Keep a fallback passcode ready, and never approve payments solely because your thumb happened to touch.
SIM swap fraud can reroute texts and calls, stealing one-time codes in minutes. Add a carrier PIN, set a SIM PIN, and store both offline. Turn off lock-screen notifications for financial apps. If your phone disappears, trigger remote lock and erase immediately, then call your bank.
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