Storage, battery, connectivity and security settings on Android phones.
How to see which Android version and security patch your phone has, how to update, and why the patch date matters.
The difference between Clear cache and Clear storage (data) on Android, what each removes and when to use which.
How Android runtime permissions work, how to review them per app or per permission, and what 'only while using the app' means.
What Android's Battery Saver and Adaptive Battery do, what they limit, and how to check which apps use the most battery.
How to turn on Android developer options, what USB debugging allows, and why to switch it off when you do not need it.
What an Android factory reset erases, what to back up first, and how factory reset protection asks for your Google account afterwards.
How Google's Find Hub locates, rings, secures or erases a lost Android phone, and what must be turned on in advance.
Where Android storage goes, the built-in ways to free space, and what to check before deleting photos, downloads or apps.
What Android safe mode is, how to start it on Pixel, Samsung and other phones, and how to use it to find a problem app.
How to share an Android phone's mobile data with a computer over a USB cable, with the menu paths on Pixel, Samsung, Xiaomi and Huawei.