The ZTE Whirl's screen is 3.5 inches with 320 x 480 pixels resolution.
There is a Qualcomm MSM7225A 1 GHz processor (CPU).
The phone runs on the Android 4.1 Jelly Bean operating system (OS).
Internal memory is No. An external, MicroSD, MicroSDHC (up to 32 GB) expansion slot is available for increased storage capacity.
The phone is powered by a 1300 mAh Lithium-Ion (Li-Ion) battery. ZTE's performance ratings are: 3 days standby time, 540 minutes talk time.