How to copy content from iPhone to a new iPad mini

You can use Quick Start to migrate data from the iPhone to the iPad. This won;t delete anything from the iPhone.

click here ➜ Use Quick Start to transfer data to a new iPhone or iPad - Apple Support

Alternatively, you can set up the iPad from a backup of the iPhone.

click here ➜ Restore all content to iPad from a backup - Apple Support

The process to transfer data from old to new iPad is straightforward. These support pages should get you started with setup of your new iPad - and the methods of transferring your data from old to new iPad:

Set up your iPhone, iPad or iPod touch – Apple Support

Transfer data from your previous iOS device to your new iPhone, iPad, or iPod touch - Apple Support

Use Quick Start to transfer data to a new iPhone, iPad or iPod touch – Apple Support

If the donor iPhone (or Pad) from which you are transferring your data precedes iOS12.4, QuickStart will not be available.

“Transfer” is rather a misnomer. In reality, your data and setup is merely cloned to the new device. Nothing is moved or removed from the original device.

An alternative is to restore either an iCloud or iTunes backup to the new device:

How to back up your iPhone, iPad and iPod touch – Apple Support

Restore your iPhone, iPad, or iPod touch from a backup - Apple Support

Apps are not directly transferred between devices. For Apps, the transfer process creates a record of the Apps that are installed on the donor iPad - and it is this record of installed Apps that is transferred to the target (new) device. For Apps that are both available and compatible with the target device, the corresponding Apps are automatically downloaded and installed from the App Store.