Once received wrong item,defective one ,please do not hesitate to contact us after received. Please provide photos as well in order to refund quickly. If find some issue for cell phone, please contact to us.Suggestions and service would be available for you. Features1. Small, only bank card size, but full function. 2. All under control by single hand, very suitable for our palm, makes you feel comfortable from all sides due to our high tech artwork and precise design. 3. Full complete body design, nano technology processing, dull polish tech. 4. MTK6737 quad core processor, low energy consuming, high technology. 5. 3.2 inch high resolution screen, . 6. 5MP front and rear cameras, with high quality sensor, you can have more beautiful photos and more capture functions. 7. Dual SIM with dual standby 2 card slots, even smaller phone, you need dual SIM with dual standby, you can insert two SIM cards, you can also insert one SIM and one memory card.Network1. 2G network frequency: - GSM 900/1800MHz 2. 3G network frequency: - WCDMA 900/2100MHz 3. 4G network frequency: - FDD-LTE B1(2100MHz)/B3(1800MHz)