The 4G Portable USB Modem promises high-speed internet access with its LTE CAT4 standard, supporting speeds up to 300Mbps. It features a SIM card slot and a robust 3200mAh battery, offering flexibility in power sources including USB ports and car chargers.

This device can connect up to 10 devices simultaneously, making it ideal for multiple users or devices. However, user experiences vary significantly. Some users report excellent performance and ease of use, praising its portability and connectivity.

On the downside, several users have faced challenges with connectivity and setup. Issues include poor instructions, difficulty in changing APN settings without guidance, and inconsistent signal reception. The battery life has also been a point of contention among users.

Overall, while the 4G Portable USB Modem offers promising features for mobile internet access, potential buyers should be aware of the possible need for technical adjustments and consider their specific needs before purchasing.