If you have mistakenly changed the tongue on the iPhone, this tutorial will help you with pictures, step by step, how to change your tongue on iPhone or iPad.
When you have an iPhone or iPad device in a language you do not understand at all, it is best to focus on the images in the tutorial below.
How do you change your tongue on iPhone or iPad? Tutorial with images
To change the language of the operating system iOS or iPados, go to the device to: Settings → General → Language & Region.
2. Next, you must add the language in which you want to be the iOS operating system, then set it as a primary language for iPhone or iPad.
Add Language → Select language → Use New Language.
After setting the new language, the device will give a restart to apply language changes, then display the language set by you.
Related: How can you change the language of applications for iPhone / iPad - Multilingual iOS apps
This setting will change the language in which the menus, notifications and options of iOS operating systems are displayed.