3GB RAM + 32GB ROM- DUODUOGO A70 has MT6739 Quad-core CPU load with 3GB RAM, greatly enhance multitasking ability, providing extremely smooth and fast using experience,internal 32GB ROM and support up to 256GB external TF card(Micro SD) for saving various images, videos, songs, popular applications and others files. 5MP+8MP Dual Rear Camera- Cell Phones With the 5.71" HD Water drop screen advanced in-cell technology full-screen display, brilliant color and remarkable clarity are just basics.1550 x 720 pixel resolution offers frameless image and better video experience. 8MP+5MP dual camera setup for rear camera can capture beautiful scenes easily. which can capture shoots with richer colors and less noise. 8 MP for front camera can meet all your self shooting needs. 4G VoLTE UNLOCKED SMARTPHONE - 2G GSM：850/900/1800/1900: 3G WCDMA：850/1900: North American version 4G FDD：B2/1900、B4/1700、B5/850、B7/2600、B12/700 cover the most common frequencies around the world. This phone is unlocked it will be compatible with all GSM network in US including AT&T, Cricket, Straight Talk, NET10, T-Mobile, MetroPCS, Simple Mobile, Google Project Fi and more. "NOT COMPATIBLE WITH VERIZON AND SPRINT".