1. This 4G router supports standard, unlocked SIM cards. It is not compatible with carrier-locked SIM cards or SIM cards restricted to specific devices by the operator. If the SIM card does not provide internet access, try using an unlocked, universal SIM card from another operator.2. In typical daily use, this 4G Wi-Fi router delivers download speeds of 1–20 Mbps over Wi-Fi, sufficient for streaming video, online gaming, and other common activities.3. The router’s 4G chipset has a maximum theoretical throughput of 150 Mbps, matching the theoretical peak speed of many 4G base stations. However, real-world speeds vary due to shared network resources, signal strength, SIM card capabilities, and environmental factors. This device is not intended for users seeking guaranteed maximum theoretical speeds or those relying on inaccurate third-party speed test applications.4. Equipped with a high-speed LTE chipset supporting TDD-LTE, FDD-LTE, and UMTS networks. Supports up to 8 simultaneous Wi-Fi connections. Features a built-in rechargeable lithium battery and compact, portable design. Compatible with Windows computers as a USB modem.5. Provides high-speed 4G LTE Wi-Fi connectivity and supports up to 8 Wi-Fi devices. Also functions as a USB modem on Windows computers. Compatible with both 3G and 4G networks. Works with tablets, laptops, smartphones, and other Wi-Fi-enabled devices.Supported frequency bands: 4G: B1, B3, B5, B7, B8, B20, B38, B39, B40, B41 3G: B1, B5, B8 Compatible in Europe, Asia, Africa, the Middle East, and Brazil. Note: 1. The battery may discharge during shipping. Charge for 3 hours using a 5V/1A adapter before first use. 2. This is a portable 4G LTE Wi-Fi router with a built-in rechargeable lithium battery, supporting up to 8 Wi-Fi users. Accepts standard (nano) SIM cards. SIM card not included — users must obtain one from a local carrier. 3. Ensure your computer’s software and firewall settings allow installation of the USB modem driver prior to use. Color: White Material: ABS Package Includes: 1 × Wi-Fi Router Note: Screen display and lighting conditions may cause slight color variation between images and the actual product. Measurement tolerance: ±1–3 cm.