Open the Contacts app on the old Android phone
Tap the menu or settings option
Select Export contacts
Choose to export to a .vcf file or SIM card
Save the file to internal storage or SD card
Transfer the .vcf file to the new Android phone using Bluetooth, email, Google Drive, or USB
Open the .vcf file on the new Android phone
Tap Import contacts
Select the account or phone storage where you want to save them
If using Google sync, sign in to the same Google account on both phones
Turn on Contacts sync in Google account settings
Wait for contacts to sync automatically
If both phones support it, use the built-in device transfer setup during new phone setup
Confirm all contacts appear on the new phone after transfer