DOES THIS DEVICE NEED A SIM CARD: Yes it does Being that this device is T-Mobile Branded and is unlocked it will work on any active GSM Nano size SIM Card, The sim card does NOT come included you will need to contact your GSM Network provider to acquire your complimentary Sim card (Free from GSM with activating of an account).
WHAT NETWORK FREQUENCIES ARE SUPPORTED BY THIS DEVICE: The Phone will support the following Frequency Bands: GSM 850 900 18001900 Band II (1900), Band IV (1700/2100), Band V (850). LTE 2 4 5 12 66. Please contact your network provider (prior to purchase) and inquirer if they support these bands in your area to ensure the device will work Properly.
SOMETHING ABOUT THE HARDWARE: A whooping NON-removable 3,380mAh battery that lasts for 16.5 hours of continuous streaming and 288 hours of standby. As well as a 6" LCD and 13 MP Camera Runs with a 2 GHz Qualcomm Snapdragon 625 MSM8953 processor.
HARDWARE SPCKS: So this phone has a Fingerprint sensor to secure and to ensure your personal information always stays safe, as well this device has a 6 inch LCD and 32GB of storage and 3GR or RAM this device will come running Android version 7 out of the box.
WILL NOT WORK ON VERIZON OR SPRINT 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 like Sprint, Verizon, Boost or Virgin (contact your network provider prior to purchasing for verification that they support the GSM frequencies listed in Bullet point #2).