The Zen X21 features a 1.8-inch TFT display which offers decent viewing experience with a resolution of 128 x 160 pixels (QQVGA) and a pixel density of 114ppi. At the rear end of the phone, there is a 1.3MP camera which supports digital zoom.
The Zen X21 has a microSD slot which is capable of taking in cards with a maximum memory of 8GB. The dual SIM handset can be used for exchanging files with other gadgets through options like Bluetooth and USB port. The support for FM radio makes it a good entertainment package as well.
To keep the show running for a long period of time without any disturbance, the Zen X21 is armed with a Li-ion battery of 1,000mAh.
The Zen X21 is a small handset that can be easily slid into the pocket and carried around wherever you go. It supports up to 8GB external memory and FM radio to account for your entertainment needs.