【Plug & Play】The 4G LTE USB wifi router with very cool leopard eye design , it takes power through USB port and works as wifi router. It also can be pluged into computer USB port and work as USB modem , the 4g router with sim card slot doesn’t need CD driver . mobile hotspot 【How to Use 4G LTE Modem】 Even if your SIM card is compatible with a 4g WiFi dongle, it may not be plug and play. Maybe you need to disable the PIN code of the SIM card and modify the APN. Please make sure that the SIM card is activated. The 4g lte mobile wifi hotspot does not support roaming services, virtual SIM cards and Internet of Things SIM cards; in rural areas, the signal that is not covered is disconnected for a period of time, which is normal. 4g lte hotspot 【Wide Applications of Portable Wifi Hotspot Device】This wifi dongle support both 3G&4G networks. The lte router wireless usb mobile broadband adapter supports up to 10 users to access the Wi-Fi network at the same time. Small and portable modem internet portatil. It supprts USB power, which is easy to use. Tablet ,Laptop, computer,mobile phones and other different types of Wi-Fi devices can connect to the 4G WiFi router to access to Internet . travel wifi hotspot 【Network Band of Portable Wifi Hotspot for Travel】The USB Wi-Fi modem router uses a Micro Sim card. There is no need to connect to broadband, as long as you have a 3G/4G SIM card, you can connect to a 3G/4g network. The hotspot wifi devices portable 5g support 4G FDD B2/B4/B5/B12/B17. WCDMA:B1(2100Mhz). It works in cars via standard usb port, or with powerbank via standard usb port outdoor. usb 4g dongle 【Customer Service for Portable Wifi Device】For 30 days after the date of purchase, return your undamaged KuWFi mobile hotspot device and receive a full refund for ANY reason.12-month warranty for quality-related issues after the date of purchase. We take care of all quality-related issues with a REPLACEMENT OR FULL REFUND. t mobile hotspot device mobile hotspot device for travel