【100% SATISFACTION GUARANTEE】We promise every customer 100% shopping satisfaction. If you have any questions about your purchase, please contact us anytime. If you are not satisfied with the mobile WiFi router, please let us know immediately so we can issue a full refund. For any inquiries, please contact our customer service. 【4G WIFI HOTSPOT & HIGH SPEED】This travel router for WiFi does not require a broadband connection; simply insert a 3G/4G SIM card to connect to a 5G network. It provides extremely fast internet speeds for your devices, even when there's no 5G network available. Effective range: 10m. 【HOW TO USE】Insert the SIM card and install the battery. While your SIM card may be compatible with the WiFi hotspot device, it might not be plug and play. You may need to disable the SIM card's PIN code and change the APN. Supports network bands b1/2/3/5/7/8/20/40. The mobile WiFi hotspot can connect up to 10 devices simultaneously and supports smartphones, tablets, laptops, etc. 【MAIN FEATURES】The 4G LTE mobile WiFi hotspot features a SIM card slot and a 2100mAh battery. It can be powered by an external power supply with no time limit. It can be charged via a computer's USB port, a car USB charger, or a power adapter. 【APPLICABLE SCENARIOS】The 4G LTE USB WiFi modem is small and lightweight, making it suitable for parties, travel, business trips, work, outdoor live streaming, gaming, car WiFi, and more.