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Q:What do the LED lights on the U300 USB modem indicate?
A:There are both CDMA and WiMAX lights, which operate as follows:
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CDMA LED Functions | LED Color |
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| CDMA Dual LED | |
CDMA Mode | RED | GREEN |
3G standby and ready to connect | Off | Slow Flashing |
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Power on boot or reset | On | On |
3G out of service or is still acquiring service |
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3G service not available | On | Off |
3G service connected | Off | Fast Flashing |
3G service connected and no activity | Off | On |
Not in 3G/4G service area | Off | Off |
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WiMAX LED Functions | LED Color |
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| WiMAX Dual LED | |
WiMAX Mode | RED | BLUE |
4G standby and ready to connect | Off | On |
4G out of service or is still acquiring service | On | Off |
4G error condition or downloading firmware | Flashing | Off |
4G service connected | Off | Flashing at the rate of |
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| data transfer |
4G service connected and no activity | Off | Flashing |
Q:How will the use of a Virtual Private Network (VPN) connection affect the data transfer speed of the U300 USB modem?
A:Since a Virtual Private Network (VPN) connection increases the amount of data being transferred for security purposes, the average data transfer speed will be reduced by its use. The amount of degradation in the data transfer speed will depend upon the level of security/encryption in place and may be reduced by consulting the IT administrator in charge of your VPN.
Q: How to verify that GPS is working on the device in that location?
A:Users can initiate an update to the latest version from within Sprint SmartView. First make sure you are using “Mobile” (Broadband) and not “WiMAX” access via
Sprint SmartView. For best results, go to an outdoor location where buildings and terrain obstructions are minimal. Insert the U300 into an USB port of a laptop PC to perform the GPS test:
From the menu, click Tools > Settings > Location/GPS
oMake sure “Disable GPS on device” is not checked
oMake sure all other GPS boxes are checked
oClick Test GPS button, if the GPS is working, the number of satellites, Horizontal 3D Estimated Position Error (HEPE), latitude, longitude, and elevation will be displayed.