iOS Tip 154 -Free up Space on iOS device

Delete the App to clear out caches, data etc.

There are two types of “Documents & Data” stored on iPhone and iPad, both of which can take up space on a device. One is usually app specific caches and other related app data, and the other is iCloud related files for an app. The fact they share the same name but have different functions, and are references in different sections of iOS Settings, is a little confusing, but they are different.

The “Documents & Data” associated with an iOS app include things like caches, app data, preferences, login details, and assorted other app-specific information. Most of this data is expendable and in many situations for many apps that have large Documents & Data storage consumption, the data tends to be very heavy on caches. This is typically the type of Documents and Data on an iPhone or iPad that users want to remove to free up some space.
The simplest way to delete Documents & Data on an iPhone or iPad is by removing the app and then re-downloading it again. That may not make a lot of sense, but for the time being Apple offers no method in iOS to manually delete caches and app data, so instead if you want to delete that app data, you have to delete the app entirely.
Keep in mind that when you delete an app, and then re-download it, you will likely lose whatever data (game levels), logins, and other saved details from that app. Do not do this if you don’t have login information saved elsewhere, and do not delete an app or its documents and data caches if you have important data stored within that app. You should back up your iOS device before beginning so that you can restore in the event you mess something up.
1 Open the “Settings” app in iOS
2 Go to “General” and then go to “Storage & iCloud Usage”
3 Go to “Manage Storage” under the ‘Storage’ section
4 Find the application(s) that have the ‘Documents & Data’ you want to delete (for example, Twitter is a 64MB app but can often take up several hundred MB with its Documents and Data), then tap on that app and choose “Delete App”
5 Now go to the “App Store” and search for and re-download the app you just deleted
6 After the app has finished re-downloading, if you return to the same Storage screen you will find it now consumes much less space because the documents and data has been cleared out

(keep in mind that deleting and redownloading an app also will update it to the latest version available, so don’t do this if you want to keep using an older version of an iOS app)

iOS Tip 120 - Manage Your Storage

iPhone/iPad have pretty awesome cameras and they are pretty awesome displays for photos as well. They’re actually such awesome cameras that almost everyone fills them up with pictures, and then you’re out of space and can’t take any more photos. To see what’s taking up space navigate to a breakdown of what’s taking up space and how much.

Go to Settings > General > Storage & iCloud Usage. Under the heading of Storage you’ll see Used (what’s actually taken up on your phone) and Available (how much free space you have). There is another option, Manage Storage, which gives you a breakdown of how much space each app is taking up as well as the option to remove that app and its data right from there.
Photos & Camera is the number one culprit for taking up space on most of the phones I see. It’s just so easy to take photos like crazy and run out of space. The biggest culprit is videos; a short video can take up more space than a few dozen photos, or maybe even a hundred or more, depending on the length of the video.

There are a number of different storage options solutions. A common one is to move them onto your computer and remove them from your iPhone. Another one is to upload them to an online service like Backblaze (cheaper than iCloud unlimited storage for $5.00/month) or use iCloud Photo Library. You may need to pay for extra iCloud storage space, but $0.99 per month gets 50GB. It can take hours or even days to upload an entire Photo Library, depending on the size and the upload speed, but it’s really great when it all gets uploaded. There are two options: Optimize iPhone Storage, meaning you get a low resolution thumbnail on the device and a full version available to download in iCloud, and when you try to view that photo it will download for your viewing. The other is Download and Keep Originals. I do that on my Mac, where I have a ton of available space, but not on my phone.

No matter which solution you use remember that if your iPad or iPhone is having a problem one of the "fixes" is to restore the device to factory settings. That means ALL YOUR PICTURES and contacts, videos etc, get erased. Get into the habit of backing up, whether to your computer or an online service.

iOS Tip 93 - What is "Other"

When connecting your iPad/iPhone to your computer you’ll see on the bottom of the Summary page, in iTunes, just what’s taking up space: Audio, Apps, Photos Other. The dreaded "Other" the mysterious "Other."

This storage section has puzzled many a tech writer and developer (even Apple Support). “Other”, which may take up considerable space on your device, consists of things like cached iTunes content (streamed movies, for example), Mail data, and Safari website data.

You can try to delete some of this, but unfortunately it’s not always possible. In fact, there doesn't seem to be a way to delete cached iTunes content.

The only way to effectively delete "Other" data is to back up and restore your device with iTunes. Backing up is a good habit to get in to not matter what. This process will retain all of your apps in the cloud while deleting any extra junk files that may exist. You'll lose some data like game save files, but it's the only way to reclaim storage claimed by “Other”.