Motorola Moto E 2nd Generation XT1527 4.5" Unlocked GSM Quad-Core Smartphone - Black DOES THIS DEVICE NEED A SIM CARD: Yes. Being that this device is GSM unlocked it will work on any GSM Network with a Micro size SIM Card (Not-included) Contact your Network Provider for a Sim card (Free from most Carriers with activating of an account). WHAT NETWORK FREQUENCIES ARE SUPPORTED BY THIS DEVICE: LTE Cat4 700/850/1700/1900/2100/2600 (Bands 2,4,5,7,12,17) and GSM 850 / 900 / 1800 / 1900 As well as UMTS B2 (1900 PCS) B4 (1700/2100 AWS 1) B5 (850). A vast array of spectrum supported on this device HOW LONG CAN I EXPECT THE BATTERY TO LAST ME: Well the Built-in battery has 2390mAh which in a Usage time frame means 17 solid hours of streaming at 4G LTE speeds as well it has a Standby time of up to 300 hours before you need to recharge the battery. TELL ME SOME HARDWARE SPECKS: Well this device comes out of the box with Android 5.0, 5.1 (Lollipop). This device runs ona Qualcomm Snapdragon 410 Quad-core 1.2 GHz Cortex-A53 Processor and has Internal Built-in 8 GB, 1 GB RAM with a microSD slot. WHAT DOES UNLOCKED REALLY MEAN: Unlocked devices are compatible with GSM carriers. I.E. AT&T, T-Mobile. And not by CDMA Carriers I.E. Sprint, Verizon. (contact your network provider prior to purchasing for verification that they support GSM frequencies).