Check your Apple ID device list to find where you're signed in - Apple Support
How to Check & Identify Your iPod's Generation: 3 Easy Ways
How to Find iPod, iPhone, or iPad Order Number (Model)
Identify your iPhone model - Apple Support
Close an app on your iPhone or iPod touch - Apple Support
Identify your iPod model - Apple Support
How to Check & Identify Your iPod's Generation: 3 Easy Ways
How to Check & Identify Your iPod's Generation: 3 Easy Ways
Get apps in the App Store on iPod touch - Apple Support
Record the screen on your iPhone, iPad, or iPod touch - Apple Support
iPod touch - Official Apple Support