As we all know that have so many operator and frequncy in the world ,so please check the frequancy of the sim card Compared with our goods,if you do not know the frequncy ,please ask your operator first. If the frequncy is right ,but can not connnect automaticly,for this can enter the ip address ,then setting the APN of the sim(the can consult operator) If signal is unstable, you can also manage the settings page, lock 4G or 3G network, can effectively improve the stability of . Main Features: chipset supporting global network TDD-LTE/ FDD-LTE/ UMTS LTE CAT4 up to 150Mbps Up to 10 Wi-Fi accesses at the same time. Low power consumption, battery last long 4~6 hours Support SD card (up to 32GB) and Wi-Fi file sharing 3 three-color LED indicators, working status displayed clearly Stylish and portable Applicable to Europe, Africa, Asia, all countries and regions, such as Russia, Israel, South Korea, Spain, Brazil, Ukraine, France, Italy, Netherlands, India, Nigeria, Switzerland, Kazakhstan, , Ghana, etc. Colour: picture color Material: ABS Package Contents: 1 * Wifi Router Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.