How to get more space on iPhone

1) Delete Apps you don't need
While many apps are only 10MB to 50MB in size, games can be 500MB to 1GB in size. Also another genre of apps that are often quite large is reference apps, including any that have fancy 3D graphics (like science apps or history apps). So go through every app and game on your iOS device and if you don't use it, get rid of it. To do so simply tap and hold its icon until it juggles and then tap the X in the corner.

2) Find out which Apps are taking up the most space
Don't stop at just deleting the apps you don't use. Go to Settings > General > Usage and tap on Manage Storage under Storage (not under iCloud as that just shows you how much you have stored in the cloud). Wait for the apps to appear under storage (it can take a minute or so for them to appear).

Now scroll through the list and be brutal. You will find the biggest space wasters at the top – probably your Photos nd Music app, but possibly your Messages app if you receive a lot of text messages with images in them.

3) Turn off Photo Stream and Only save HDR photos
Everyone knows that photos take up a lot of room on our devices, so it's always good to go through and delete older photos in the Photos app. But what many people don't realize is that a lot of the time any new photo they take is actually being saved as two images, not one, and this means your storage gets taken up twice as fast.

The reasoning behind this is because the iPhone allows you to take HDR images (three images taken at three different exposures and then combined into one image to give you the best look). But when you take an HDR image the original non-HDR image is also saved by default. Hence, two images.

To disable saving the original image (and if you're just someone who likes taking the best snaps there's little reason you should save the non-HDR image), go to Settings>Photos & Cameras and toggle the "Keep Normal Photo" switch to off.

To unable photo stream, Go to Settings > Photos & Camera and deselect My Photo Stream. This will delete your Photo Stream from your iPhone.

Unfortunately, it also means that your iPhone photos are no longer uploaded to your Photo Stream on your other devices. You can always turn it back on again after the storage issue has passed.

4) Watch out for Newsstand apps
Newsstand is Apple's dedicated folder that contains all your digital magazine subscriptions. Some magazines only save the most recent two or three issues, so old issues don't take up your iPhone's storage. But there are a few magazines and newspapers I've found that save everything forever. One such Newsstand paper is the London Metro paper. It was saving over 6GB worth of old papers on my device. While I could have deleted individual papers, I instead went in and removed the entire app. Go through your Newsstand app and see if any are doing the same on your device.

5) Set Messages to auto-delete
Your Messages history can take up gigabytes of space, especially if you send or receive a lot of photos via text. In iOS 8 there's a new setting where you can automatically delete older messages. To enable this go to Settings>Messages and then under "Keep Messages" set it to 30 days or 1 Year. Also be sure that you've set Audio and Video messages to expire after two minutes.

You can also delete entire threads individually by opening the Messages app and then swiping left on a thread and tapping Delete. Just be sure you've saved any photos you want to permanently hold on to before deleting the thread.

6) Delete voicemail messages
This last one isn't a space saver tip that occurs to many people. However, Apple's Visual Voicemails can quickly take up a lot of space on your iPhone if you never delete any of them. If you've only got one or two, it's no big deal. But I know people who have every voicemail they've ever received still on their iPhone. To delete individual Visual Voicemails go to the Phone app then tap on the Voicemail button. Find the voicemail you want to delete and then swipe left on it and tap the red Delete button.

7) Get external storage
iPhones are limited in that their lack of USB or SD ports means there's no way of quickly getting extra storage, or checking out some photos a friend gives you on a memory stick. However, there are a number of storage devices and adaptors that can use WiFi and Apple's own Lightning port to connect, allowing for additional storage. Brands like PQI iConnect which can be plugged directly into the phone and manage via an app, can be purchased from Newegg from 49.99 USD http://www.newegg.com/Product/Product.aspx?Item=N82E16820141670

8) Back up photos on Dropbox
Using Photo Stream isn't the only way in which you can back up the photos you take on your iPhone instantly. You can use the Camera upload feature in Dropbox to have captured images copied directly from the iPhone to Dropbox.

Credits – KnowYourMobile.com and MacWorld