Cloud
Convenient and automatic. Watch the free space, or the backup will silently stop.
A small personal knowledge base: what to do on day one, how not to lose your photos and how to keep the battery healthy. No ads, no sign-up.
Photos are what people lose most often. A cloud backup runs by itself while the phone charges on Wi-Fi. Every few months it is worth making a second, full backup to a computer over a cable.
Convenient and automatic. Watch the free space, or the backup will silently stop.
A full copy over a cable. Turn on encryption so saved passwords are included.
A backup nobody has opened guarantees nothing. Once a year, confirm that it is recent.
For the first day the system rebuilds its search index and sorts photos. Leave it charging for a day or two; speed usually comes back.
Open the storage screen in settings: the largest items are listed first. Most often it is video and messenger history.
Restart the phone and check that the sender is not blocked and the unknown-sender filter is off.