From the PayPal Here FAQs:
https://www.paypal.com/webapps/mpp/credit-card-reader-faq
PayPal Here is currently available for both the iOS and Android smartphone platforms.
Apple iOS
PayPal Here for iPad is supported on iPad devices running iOS version 5.0 and above.
iPad (all models)
iPad mini
PayPal Here is supported on most Apple mobile devices running iOS version 5.0 and above.
The following devices are compatible and supported:
iPhone 3GS
iPhone 4
iPhone 4S
iPhone 5
iPod Touch
iPad (all models)
iPad mini
Android
In order to run PayPal Here, an Android device must include the following specifications:
Android version 2.3.3 (Gingerbread) or higher
3.5 mm headset jack with microphone
Support for Location Services
Access to the internet (via WiFi or cellular data network)
PayPal Here is not compatible with all Android devices. Please download the app on your phone to determine if your device is compatible.
At this time, PayPal Here is not supported on Android tablets.
