Display Colors 16.7 million Display size (inches) 2.64" Resolution (pixels) 320 x 432 Camera & video Rear-facing camera 5 MP Video capture and playback Battery Standby time (days) Up to 21 Capacity: 3,180mAh Li-lon (removable) Talk Time (hours) Up to 25 Audio playback time with headset (hours) Up to 50 Processor Chipset Qualcomm® Snapdragon? 427 Cores 1.4GHz quad-core Memory Memory format microSD? Internal memory storage Up to 16GB Expandable memory storage up to 128GB ( memory card not included ). RAM 2GB Operating System Voice dialing and voice commands Wireless technology 4G-LTE Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 25, 26, 28, 30, 38, 41, and 66 Wireless emergency alerts (CMAS) capable Noise suppression Noise suppression by Fluence® 3G - UMTS 850/900/1900/2100MHz 4G HSPA+ with enhanced backhaul World phone Quad-band Enhanced Push-to-Talk SIM Type Nano HD Voice capable Wi-Fi-capability 2.4GHz & 5GHz Wi-Fi connectivity: 802.11a/b/g/n/ac/i/r/k Bluetooth® technology v4.3 + EDR, A2DP, LE GSM/GPRS/EDGE 850/900/1800/1900MHz Mobile Hotspot Up to 10 devices Apps Included apps Lone Worker Safety Monitoring, Sonim SCOUT Web browser Sensors Sensors Accelerometer, Barometer Messaging & email Text messaging Insert pictures, video clips and sound clips easily (messaging charges apply) Mobile email Get support for POP3/IMAP, Gmail?, Microsoft® Exchange ActiveSync®, and more. Music External music play controls Music Player Supported music formats AMR-NB, AMR-WB, AAC, AAC+, AAC+V2, MP3 Accessibility Hearing Aid (HAC) rating: M3,T4 TTY/TTD compatible