Storage: 256GB. Model: Galaxy Tab S7+ (Wifi). Color: Mystic Black. 🔒 This device will only work with WIFI 🔒. Manufacturer: Samsung. Battery Health: Minimum 80% Battery Health. Since 2009, YYWireless has been a trusted supplier of a wide range of cell phones, tablets, computers, and accessories in various conditions—new, certified pre-owned, refurbished, and used.