If you take a lot of photos and video on your phone you need to consider the expense of iCloud or Google Drive (depending on whether you have an iPhone or an Android phone).

iOS (iCloud) gives you 5GB of free space and Android (Google Drive) gives you 15GB (but will store lower quality versions of your pictures not to count against your 15GB [probably not good enough for poster prints]).  If you need more space you’ll have to cough up a monthly fee.  Last I checked it’s under $5/month for either.

For iOS users enable iCloud backup (make sure to select pictures).

For Android users, turn on Backup and Sync.

This is a must do if you take a lot of photos and videos with your phone.  My littlest sister lost her vacation photos when the iOS 9 upgrade bricked her phone and my mom lost photos and videos of her visit with my grandma when her toddler nephew accidentally deleted them.  Unfortunately this discipline isn’t being taught at the cell phone store or through the mass media.  It’s kind of like always having smoke detectors with charged batteries in your house.  Not something people think about much but crucial nonetheless.

BONUS TIP: If you don’t need poster prints of your photos or 4K versions of your video you can use Google’s Backup and Sync with iOS or Android for free.