But if you try to do this, you might find that the effect doesn’t seem to last, and you are only able to type one capital letter before the keyboard reverts to typing in lower case. Fortunately this is not an issue with your iPhone, but rather a setting that you need to enable by following our guide below.  

How to Enable Caps Lock in iOS 9

Device used: iPhone 6 Plus Software version: iOS 9.2 The steps in this article will show you how to enable the Caps Lock option on your iPhone. Once these steps are completed, you will be able to open an app that uses the iphone keyboard and double-tap the Shift key to enable Caps Lock.  

   

   

        When you open an app that uses the keyboard and double-tap the Shift key, then it should look as it does in the picture below. Once you have finished typing in all caps, tap the Shift key again to exit the Caps Lock mode.

    Running out of room on your iPhone? Learn how to delete an app in iOS 9 to make space for music, movies, or more apps. He specializes in writing content about iPhones, Android devices, Microsoft Office, and many other popular applications and devices. Read his full bio here.

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