Back up your iPhone to iCloud or a computer
Charge both phones fully
Turn on your Android phone and connect it to Wi-Fi
During Android setup, choose to copy data from an iPhone
Use a USB-C to Lightning cable or the Move to Android transfer method if prompted
Sign in to your Google account on the Android phone
Transfer contacts, calendars, photos, videos, and messages when available
Install Google apps on the iPhone if needed for syncing
Move photos and videos to Google Photos or another cloud service
Export contacts from iCloud if they do not transfer automatically
Re-download apps from the Google Play Store
Set up email accounts on the Android phone
Turn off iMessage on the iPhone
Turn off FaceTime on the iPhone
Remove the SIM card from the iPhone and insert it into the Android phone if needed
Check that calls, texts, and mobile data work on the Android phone
Sign out of Apple services on the iPhone if you will stop using it
Factory reset the iPhone after confirming all data is transferred