14
Troubleshooting
Problem Suggested Solution
Can not establish the USB con-
nection between your device 
and PC.
•  You need to install the software. Run the installation program 
in path of My Computer > ZTEMODEM. 
•  If the driver  of  your  device  is  abnormal,  please reinstall  the 
software. You need to uninstall the software rst.
The client connected to the 
device can not access the Inter-
net.
•  Make sure your SIM card is available.
•  Change the location to nd a place with good signal.
•  Check network settings.
•  Contact with your service provider and conrm your APN set-
tings.