Microsoft Lumia 550 8GB 4G LTE Black Unlocked Cell Phone 4.7 1GB RAM Technology: 4G LTE Built-in Storage: 8GB Operating System: Windows 10 Part Number: A00026601 Data transfer: HSPA 42.2/5.76 Mbps, LTE Cat 4 150/50 Mbps Form Factor: Smart Phones SIM Card Type: Nano SIM Sensors: Accelerometer, proximity |