Considering this, can you have more than 4 icons on iPhone?
The iPhone dock is a very useful feature allowing you to access your favorite four items on the phone at the touch of a button. The standard setup allows you to have four icons on the bottom of the home screen; however, if you feel the need for one more shortcut, it is possible to add a fifth button to this.
Also Know, how many icons can you have on iPhone Dock? four icons
Correspondingly, can I have 5 apps on Dock?
No. You can create a folder with many, many apps that could effectively be placed in the dock.
How do I put more than 4 apps on the Dock?
First, long press any app, either on your Dock or Home screen. When the pop-up menu appears, select Edit Home Screen. If you have four apps in the Dock already, drag an app from the Dock to the Home screen or to an existing folder. Now, drag and drop apps create a new app folder or locate an existing folder.