A common problem that occurs for users of the Apple iPhone is the inability to delete apps. When you tap and hold the screen, an ‘X’ doesn’t appear in the upper-left corner of the icon as expected.
What usually causes this problem is a restriction setting. Perhaps this setting was accidentally set and forgotten about.
1. Open Settings.
2. Select General.
3. Choose Restrictions.
4. Enter the password set for restrictions.
5. Set the Deleting Apps setting to On so that it is allowed.
Once you ensure this setting is on, you should be able to remove apps without a problem.
Another reason the X may not appear is that it is an app that is built into Apple iOS. Apps such as Notes, Newsstand and Calendar cannot be removed.