3. BLU Vivo XL: 3,150mAh removable

The phone is built with a plastic mirror-like finish and a unique pattern detail. For BLU Vivo XL specs, it packs a big 5.5-inch HD AMOLED screen, Android 5.1 Lollipop OS (upgradable to Marshmallow soon), a MediaTek MT6753 octa-core 1.3GHz processor, a decent 3,150mAh battery, 16GB ROM (expandable up to 64GB) and 2GB RAM. On the front, there is a selfie camera capable of 5 megapixels while the back has a 13MP sensor.

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