You can use Move to iOS app to transfer your content from your old Android device to your new Apple iPhone.
Plug both devices into a power source and turn them on. On your new iPhone, during the device setup process, navigate to the Apps & Data screen.
The 'Apps & Data' screen is only available during the iPhone device setup process.
From the 'Apps & Data' screen, tap Move Data from Android.
Make sure the content you are moving (including what may be on the external Micro SD card) can fit onto the new iPhone.
On your Android phone, go to the Google Play Store and:
On your Android device:
Enter the code from the iPhone on your Android device.
On the iPhone device, from the 'Move from Android' screen, tap Continue.
On the Android device, enter the 6 digit code that appears in the space provided.
On the Android device, from the 'Transfer Data' screen select the content to transfer then tap Next.
This process may take a long time depending on how much data is being transferred. Leave both devices untouched until the iPhone device shows it's finished.
After the loading bar finishes on the iPhone device;