Do not throw it in the trash. Electronic waste contains toxic materials. Give it to an e-waste recycler or a local electronics hobbyist who might salvage components.

You cannot "upgrade" the firmware or software of the 3G dongle to make it 4G. The upgrade is a physical replacement of the device and the SIM plan.

In your Netsetter settings or phone settings, ensure the network type is set to "4G Only" or "LTE/3G/2G (Auto)" Free Data Offer:

Have a specific error code on your Netsetter? Leave a comment below (or visit your local Vi gallery). Do not fall for YouTube videos promising "4G unlock software"—they are scams.