Guide on how to contacts from iPhone to Android by iCloud:

Step 1. Sync your iPhone contacts to iCloud by clicking “Settings” > your name > “iCloud” > toggle on “Contacts” option > “Merge”.

Step 2. Go to iCould on your computer and then sign in with your Apple account.

Step 3. Tap on “Contacts” and then select the contacts you want to transfer.

Step 4. Choose the option “Export vCard” and the selected contacts will be exported to the computer and saved as VCF files.

Step 5. Connect your Android device to the computer and then transfer the exported VCF files from computer to Android.

Steps to sync contacts from iPhone to Android with iTunes:

Step 1. Use a USB cable to connect your iPhone to computer and then launch iTunes.

Step 2. Click the device icon on iTunes and the info of the connected iPhone will be displayed on the interface.

Step 3. Choose “Info” > “Sync Contacts with” and select “Google Contacts”.

Step 4. Log in to your Google account and hit “Apply” to confirm your option.

Step 5. Unlock your Android phone and continue going to “Settings” > “Account & Sync” > “Add account” > “Google” and then sign in with the same Google account you used on iTunes.

Both of the above methods are through official tools and can be very secure. But with a bit of trouble, I recently discovered new third-party tools that can help transfer files from iPhone to Android directly,MobiKin Transfer for Mobile,it deserves a try.