The ZTE Whirl 2 comes with a 3.5-inch TFT capacitive display panel. Powering the device from within is a Quad-Core 1.2GHz processor with a microSD card slot for up to 32GB memory expansion. Camera-wise, the phone has a lone 3MP rear-facing camera. The ZTE Whirl 2 packs in a Li-Ion 1,500 mAh battery that helps it last up to 10 hours of talk time and 17 days in standby mode.. Upon release, the phone runs on the latest Android 4.3 Jelly Bean OS.