I'm thinking of buying Energizer Energy E520 LTE Dual-SIM 16GB Factory Unlocked 4G/LTE Smartphone - Black/Grey. Android 6.0 Marshmallow, Energizer E520, GSM 850 / 900 / 1800 / 1900 MHz, Touch Screen Phones,Energizer E520,9SIAEJW9MS2835,View Return Policy. I would like to have a fast and smooth phone with good software, long software support and a nice camera. Is Energizer Energy E520 LTE Dual-SIM 16GB Factory Unlocked 4G/LTE Smartphone - Black/Grey worth the money $329.00? Any reviews?