Last Updated: Nov 20, 2013
Performing the following steps can help you resolve some of the more common device issues that you may experience with your Sprint 3G/4G USB Modem 250U by Sierra Wireless.
Find and update your device software
Just like a computer, the software on your phone needs to be updated periodically to make sure you have all the latest fixes and enhancements to keep it running at optimal performance. Check your current version and perform any needed software updates.
Update the device data profile
If you are experiencing any data issues, we recommend performing a data profile update. This will refresh your data service parameters such as username and password and help clear out any memory issues that might be affecting your USB Modem.
Note: To perform the update, you must have Sprint SmartView open and your 250U USB Modem inserted in the computer in a Ready to Connect state, but do not connect to the Sprint network.
To update the data file in Sprint SmartView:
If the above option is grayed out:
Ensure signal strength is sufficient
If you are only receiving 1-2 bars, it is very possible you will lose connection or occasionally not be able to connect. You need 2 or more bars for a good connection. Try using your 250U in a different location to gain increased signal strength.
If you are having issues connecting to 4G in a building or home, keep in mind that at this time, 4G USB devices are primarily capable of getting the best service near an exterior wall or outside. To potentially resolve in-building coverage issues, you may have to use the device in other locations within the building to see if your coverage or signal improves.
Check for computer issues
Sometimes your computer could be having an issue that prevents your 250U from working correctly. To check for this:
If you are still having issues, you should try inserting your 250U USB Modem in a different USB port on your computer.