iPad
Q: Iphone
How do I set up find my iPhone on 2nd phone?
Posted on Sep 27, 2016 2:51 PM
by Michael Black,Apple recommended
Log into the same iCloud account you regularly use and enable it in the iCloud account settings.
Set up Find My iPhone, iPad, Apple Watch, and Mac - Apple Support
Just make sure that each device you set up on the same iCloud account has its own unique name. You set the device name in settings->general->about->Name.
Posted on Sep 27, 2016 3:12 PM