If the Mobile WiFi provides a slow Internet access speed, you can do the following:

1. Check whether the signal strength indicated by the LED indicator is stable.
2. Check whether the Mobile WiFi is connected by multiple devices or is in peak hours.
3. Check whether you are using the device when moving quickly.
4. Check whether you have exceeded your monthly mobile data limit contracted with your carrier.
5. The Mobile WiFi has a built-in overheating protection mechanism. If the temperature is too high, Internet speeds will be automatically limited to prevent the Mobile WiFi from overheating.
6. Please turn off/move away from other 2.4 GHz wireless network devices and other home electronics (such as microwaves and TVs) that may produce interference affecting the Mobile WiFi, and then try again.
7. Please confirm that there are no physical obstructions (such as cement walls) that may weaken the signal between the Wi-Fi device and the Mobile WiFi.
8. Remove the SIM card from the Mobile WiFi and insert it into another device to check whether the network speed is fast. Try several more SIM cards to check whether the problem persists. If the problem persists, take your device and proof of purchase to an authorized Huawei Service Center for assistance.