Samsung Galaxy S5 G900A 16 GB 4G LTE (Shimmery White) GSM Unlocked
Brand: Samsung Electronics
Color: Shimmery White
DOES THIS DEVICE NEED A SIM CARD: Yes it does Being that this device is GSM unlocked it will work on any GSM Network with a Micro size SIM Card The sim card does not come included, if you will be using this device with a Network Other than AT&T you will need to contact your Network Provider to acquire your complimentary Sim card (Free from most Carriers with activating of an account)
Network Frequencies and Data Type LTE: Bands 1/2/3/4/5/7/17; HSPA+/UMTS: 850/1900/2100MHz; GSM: 850/900/1800/1900MHz  .
HOW LONG CAN I EXPECT THE BATTERY TO LAST ME: Well the battery has 2800mAh which in a Usage time frame means 29 solid hours of streaming at 4G LTE speeds as well it has a Standby time of up to 77 hours before you need to recharge the battery (Taken from the manufacturer take with a grain of salt)
WHAT DOES UNLOCKED REALLY MEAN: Unlocked devices are compatible with GSM carriers the kinds that Use SIM Cards for Service like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers) Unlocked Devices will not work with CDMA Carriers the kinds that dont use sim cards for service like Sprint, Verizon, Boost or Virgin (contact your network provider prior to purchasing for verification that they support GSM frequencies)
WHAT DOES UNLOCKED REALLY MEAN: Unlocked devices are compatible with GSM carriers the kinds that Use SIM Cards for Service like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers) Unlocked Devices will not work with CDMA Carriers the kinds that dont use sim cards for service like Sprint, Verizon, Boost or Virgin (contact your network provider prior to purchasing for verification that they support GSM frequencies)