You've purged your apps, deleted all but the bare minimum of photos, and even purchased extra iCloud storage (only to realise it doesn't actually help) yet somehow, somehow, that "Storage Almost Full" pop-up is clinging on for dear life.
If you've got to the stage where taking a photo means desperately deleting anything on your phone, we have some much needed fixes for you.
1 | Find Out How Little Space You Actually Have
Settings > General > Storage & iCloud Usage > Manage Storage
Not surprisingly music, photos and videos are the biggest killer, but you'll notice even apps like Safari are taking up a lot of space? We'll come onto that later. For now, if you haven't already get ruthless and delete anything you don't actually need.
2 | Move Your Photos To iCloud
You've got a whole 5GB of free storage space up in that mystical cloud, so start backing up your photos and videos on there and then delete them off your phone.
Settings > iCloud > Photos > iCloud Photo Library > Optimise Phone Storage
3 | Clear Your Safari Cache
Every time you load a site, web browsing apps like Safari and Chrome build up data on your visit - right down to how long you've spent eyeballing it. Sure this cuts down the time spent accessing your most visited, but it also eats up a fair bit of space on your phone too. Clearing your cache could free up to 2GB.
Settings > Safari > Clear History And Website Data > Then Restart Phone
4 | Uninstall And Re-Install Facebook
It's not just Safari either - in fact all your apps accrue a lot of cache, so much so Apple says they should come with a self-cleaning function which clears it every now and then, but apps like Facebook don't. An easy way to sort this is to delete the app altogether and then re-install it. Don't worry it won't get rid of anything vital, just a load of old data you didn't even know was there.
Hold down Facebook app > Hit the x when the apps start to jiggle > Go To The App Store To Reinstall > Restart Phone
5 | If All Else Fails… Restore Your iPhone
So this fix is a little more extreme, but if you'd had your phone for years, it might just be worth resetting your phone to the factory default settings - just don't forget to back it up first.
Launch iTunes on your computer and connect iPhone via USB > Click the device icon > Click Restore device