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What does the following abbreviations mean on the Samsung Galaxy Note II?

What does all the abbreviations mean, such ad anr, gpu, cpu, usb, vpn, nfc and many otherd.Very Frustrating!  Thanks

What is cpu on my galaxy 4 and do I need to have it on

Hey Frank. Here's what the abbreviations stand for.

ANR - Application Not Responding
GPU - Graphics Processing Unit
CPU - Central Processing Unit
USB - Universal Serial Bus
VPN - Virtual Private Network
NFC - Near field Communication

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