Features 1、4G: This unlock 4G smart phone supports 4G FDDs: B1,B3,B5,B7,B8,B20, 2100,1800,850,2600,900,800, TDD: B39,B40,1900,2300, which can be used with almost all SIM card operators in the world. 2、Compact Size: This mobile has compact body, easy to carry. 3.5 inch screen, and the phone size is 102x45x10.3mm, fashionable and simple, flexible control with one hand, comfortable grip, small and amazing design like bank card, small size, taking up no space. 3、Functions: The mini unlocked cell phone support for Google App Store, for WeChat, for GPRS, Bluetooth, wireless network, hotspot sharing, etc. 4、3200mAh Battery: The phone has a built in 3200mAh battery, dual cards and dual standby, no need to worry about distance limitation, WiFi dual antennas, high speed and unstable network connection. 5、Identification Function: Side fingerprint unlocking and infrared face recognition unlocking. Don't worry that face unlocking is not available when wearing a mask. Integrated side fingerprint unlocking and tapping can be used for unlocking, with more sensitive identification function. Specification Item Type: Mini Smartphone Material: ABS, LCD and metal Gross Weight: 205g/7.2oz Model: S10I Product Size: 102x45x10.3mm/4.0x1.8x0.41in System: For Android 9.1 Chip: MTK RAM: 3GB ROM: 32GB Screen Size: 3.5 inches Card Slot Type: 2 card slots (supporting the simultaneous installation of two Nano SIM cards or one Nano SIM card and small memory card) Front Camera: 8MP Rear Camera: 13MP Support Functions: facial recognition, fingerprint recognition, for Google Store, for WhatsApp, for GPRS, Bluetooth, WiFi, hotspot sharing, gravity sensing, distance sensing, etc Network Format: FDD: B1/B2/B3/B4/B5/B7/B12/B17/B20/28 TDD: B38 / B39/B40/B41 WCDMA: B1 / B2/ B5 / B8 GSM: 850 / 900 / 1800 / 1900 Battery Type: 3200mAh lithium ion battery, built in Package List 1 x Mobile Phone 1 x Charging Cable 1 x Card Pin 1 x Mobile Phone Film 1 x Phone Case 1 x Instructions