Samsung Galaxy S5 SM-G900A Cellphone, 16GB, Blue This cell phones are fully compatible with Verizon. For GSM carriers Like AT&T and T-Mobile as well as with GSM SIM need cards (e.g. H20, Straight Talk, and select prepaid carriers) need to contact the service provider to check fully compatibility of the phone. This Unlocked cell phones will not work with other CDMA Carriers like Sprint, Boost or Virgin. 2G: GSM 850 / 900 / 1800 / 1900, 3G: HSDPA 850 / 1900 / 2100, 4G: LTE 700 / 850 / 1700 / 1800 / 1900 / 2100 / 2600 Internal Memory: 16GB storage, 2GB RAM + microSD Slot Expandable up to 128GB 5.1" Super AMOLED Capacitive Multi-Touchscreen w/ Protective Corning Gorilla Glass 3 Android v4.4.2 (KitKat), Quad-Core 2.5 GHz Krait 400 Processor, Chipset: Qualcomm MSM8974AC Snapdragon 81, Adreno 330 Graphics