【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 for a full refund. For any questions, please contact our customer service. 【4G WIFI HOTSPOT & HIGH SPEED】This travel WiFi router requires no broadband connection, only a 3G/4G SIM card to connect to a 5G network. It provides extremely fast internet speeds for your device even without a 5G network. Effective range: 10m. 【HOW TO USE】Insert the SIM card and install the battery. Even if your SIM card is compatible with the WiFi hotspot device, it may not be plug and play. You may need to disable the SIM card PIN 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. 【KEY FEATURES】This 4G LTE mobile WiFi hotspot features a SIM card slot and a 2100mAh battery. It can be powered by an external power supply, without time limits. It can be charged via a computer USB port, USB car charger, or power adapter. 【APPLICABLE SCENARIOS】This compact and lightweight 4G LTE USB WiFi modem is ideal for parties, travel, business trips, work, outdoor live streaming, gaming, in-car WiFi, etc.