1、Network System: Soyes D18 is a 3G smart phone. Please ensure that your sim card supports 2G GSM 850, 900, 1800, 1900 and 3G WCDMA, B1(2100), B5(850), B8(900). 2、Good Functions: 3G mini smart phone supports for Android 8.1, supports APP downloading and can also be connected to wifi for use without sim card. 3、Best Spare Phone: 1580mAh battery, 0.3MP front camera (with beautification function), 2MP back camera, support dual SIM and dual standby. 4、Software Functions: Soyes D18 mini mobile phone supports calculator, alarm clock, calendar, memo, timing switch, key lock, U disk fnctions. 5、Card Slot Type: Soyes D18 mini smartphone has two card slot (supports two Nano SIM cards or one Nano SIM card and one TF card at the same time) Item Type: Soyes D18 Phone Model: D18 Material: ABS, LCD Color: As Pictures Shown Weight: Approx. 133g / 4.7oz Product Size: Approx. 86.4x43.8x10.2mm / 3.4x1.7x0.4in System: for Android 8.1 CPU: MTK6580 RAM: 1GB ROM: 8GB Screen Size: 2.5 Inches Card Slot Type: Two card slot (supports two Nano SIM cards or one Nano SIM card and one TF card at the same time) Charging Interface: Type C Front Camera: 0.3MP Rear camera: 2MP Network System: 3G: WCDMA B1/B5/B8; 2G: GSM850/900/1900/2100 Battery Type: 1580mAh Lithium Ion Battery (Built in) 1 x Phone 1 x Phone Case 1 x Charging Cable 1 x Phone Film 1 x Needle 1 x Manual