When Apple 6s makes and receives calls, a short message editing box will appear on the call interface. How to cancel?

When making and answering a phone call, a short message editing box will appear in the call interface because the phone is stuck. Just restart. The card machine is stuck because it occupies too much memory.

Extended answer: How does iPhone clear memory to free up space?

1. Check the usage of storage space.

Before deleting all the apps and photos, let's take a look at how much storage space our iPhone has and what takes up the space of the iPhone.

2. Uninstalling does not require any application.

From "Manage Storage Space", you can also see which applications are installed on the iPhone, and you can delete them directly from here.

3. Clear the downloaded content

Go to Settings-Music-Downloaded Music to view downloaded songs and albums. Swipe left and click "Delete".