Android
9 questions
How to free up memory?
•Settings → Storage → Free up space.
•Clear app caches.
•Use Google Files for analysis.
•Delete unused apps.
•Move photos to the cloud.
How to extend battery life?
•Adaptive battery in settings.
•Dark theme for OLED.
•Disable Always On Display.
•Limit background activity.
•Check consumption in settings.
How to install APK?
•Settings → Security → Unknown sources.
•Or in the installer app settings.
•Download the APK.
•Open and install.
•Only from trusted sources!
How to take a screenshot?
•Power + Volume Down.
•Or a three-finger swipe down gesture.
•Long screenshot: after capturing → scroll.
•Google Assistant: 'Take a screenshot'.
•Depends on the manufacturer.
How to find a lost phone?
•android.com/find.
•Sign in to your Google account.
•Geolocation, call, lock, erase.
•Find My Device must be enabled.
•Works only if the phone is online.
Android: how to extend battery life and set up power saving?
Start with the requirements: what should work, what are the constraints regarding budget/performance/security. Then choose a solution.
Android: how to configure privacy and app permissions?
Practice for «Android»: create a checklist (installation, setup, backup, updates) and go through it once — this reduces the number of «mysterious» problems.
Android: how to speed up the system and remove unnecessary apps?
Answer on "Android": updates and backups are more important than fine-tuning. Automate backups and enable 2FA.
Android: how to protect your smartphone (PIN, biometrics, Find My Device)?
For "Android": it is useful to find the original source (documentation, release notes) and reproduce the problem with a minimal example.