If you'd like to try and improve your current setup, let me know: Which are you using?

Are you looking to the device for a different network?

Trying to "flash" 4G firmware onto a 3G device will likely "brick" (permanently break) your hotspot. Why You Might See "4G" Claims Online

While you cannot turn your ZTE MF65M into a 4G device, you can ensure it is running the latest official firmware to stay secure and stable. If you truly need 4G speeds for streaming or gaming, your best investment is a modern LTE hotspot.

Supports Cat6 LTE for much faster "Advanced 4G" speeds. ZTE MU5001: If you want to skip 4G and go straight to 5G. Final Verdict

The ZTE MF65M is a popular 3G mobile hotspot known for its portability and simplicity. However, as 4G and 5G networks become the global standard, many users are looking for ways to boost their speeds.