<br><b>work network Frequency: FDD LTE: B1(2100MHz), B3(1800MHz) /B5(850MHZ) AT&T and U.S. Cellular 850mhz <br><b>UMTS:2100MHz <br></b> <br><b>GSM:850/ 900/1800/1900MH<br> </b> please check what color LED show and check your PC WiFi SSID and connect SSID:UFI 4G UFI XXX WIFI KEY:1234567890 WEB GUI:192.168.199.1 admin :admin <br> 1. 4GUF907 is not only a modem or a router, it is a real UFI, You can use it in cars via standard usb port, and outside with powerbank via standard usb port. <br> 2. Wireless access is available on both 3G&4G network and Wi-Fi networks.<br> 3. Internet connection sharing, up to 8-10users can access the Wi-Fi network at the same time. <br> 4. Work with external power supply, no limited working time. <br> <br><b>Please notice:<br></b> <br><b> 1. please check the frequancy of the sim card Compared with our goods,if you do not know the frequncy please check frequncy band learn it : https://en.wikipedia.org/wiki/List_of_LTE_networks.<br> 2.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 info can consult operator)<br> 3.If signal is unstable, you can also manage the settings page, lock 4G 3G network, can effectively improve the stability of the network<br> 4.the router work with 4G AT&T network Network band ,some ONE test it by AT&T sim card 4G . it can work . but if SOME areas, with poor signal coverage leads to can not search internet. even if support AT&T SIM CARD , but if use the router first time , it should be log in web GUi to revise APN .<br> 5. the router support any device with wifi functions, but if want to intall software work as modem just for windows . 6. the router not Support T Moblie in US.<br> If you don't know how to set it up, check out the YouTube video: https://youtu.be/SAR4RN3HDgI<br>