Android: the settings that actually matter
Paths vary a little by brand: Samsung, Xiaomi and Google do not file everything in the same place. The name of the setting does not change. When in doubt, type it into the search box at the top of Settings.
- 01
Choose a six-digit PIN, not a pattern
The pathParamètresSécurité et confidentialitéVerrouillage de l’écran
A pattern can be read over your shoulder and leaves a grease trail on the screen. The most common ones fall in three tries.
In the roadmap : Lock your phone’s screen - 02
Check the device is encrypted
The pathParamètresSécurité et confidentialitéAutres paramètresChiffrement
On by default since Android 10, but an older or refurbished device may not be. Without encryption, pulling the storage is enough to read everything.
In the roadmap : Turn on device encryption - 03
Review permissions, category by category
The pathParamètresSécurité et confidentialitéGestionnaire d’autorisations
Location, mic, camera, contacts, files. Android lists the apps for each: this is where you discover what you granted without thinking two years ago.
- 04
Delete the advertising ID
The pathParamètresSécurité et confidentialitéConfidentialitéAnnonces
This is not “turn off personalisation”, it deletes the number that follows you from app to app. The button exists, it is just well hidden.
- 05
Turn off Wi-Fi and Bluetooth background scanning
The pathParamètresLocalisationServices de localisation
Both let the phone scan networks around you even with Wi-Fi off, to refine your position. They are on by default.
- 06
Check the backup and its date
The pathParamètresGoogleSauvegarde
Same as on iPhone: look at the date. A six-month-old backup is not a backup.
In the roadmap : Back up your device automatically - 07
Check Play Protect is on
The pathParamètresSécurité et confidentialitéPlay Protect
It scans installed apps and the ones you download. Not sufficient on its own, but free and already there.
- 08
Hide sensitive content on the lock screen
The pathParamètresNotificationsNotifications sur l’écran de verrouillage
Your login codes arrive as notifications. Shown in plain sight on the lock screen, they cancel the two-factor authentication they are meant to serve.
You have been through all of them.
These settings do not need redoing every month, but they are worth checking after every major system update: that is when some of them quietly return to their original value.