The NIU Tek 4D2 is a low-end smartphone with Android 4.4. Its specs are nothing to write home about - 4" 480 x 800 px display, 1 GHz dual core MediaTek processor, 512 MB RAM, 4 GB ROM, microSD card slot, 3.2 MP rear camera, and a 1.3 MP front one. Dual SIM card support is on board as well.
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