It's a known issue that both of Verizon's 4G LTE modems can take 2 minutes to switch from 3G to 4G mode, which is annoying. We found the modem to be more reliable when we made sure the rotating door to the USB plug was closed.

However, during other trips the UML290 stayed connected for over an hour. On a couple of occasions we lost work when blogging because we didn't realize we were disconnected. During our hour-plus daily commute to New York City from central New Jersey, we experienced an average of four to five disconnections in both directoins, especially as the modem tried to latch onto a 4G signal (or fell out of 4G coverage). That works out to 5.6 MBps, which is fantastic for those who need to upload large files.Įarly on in our testing, the UML290 had trouble holding onto a connection in a moving vehicle. We also uploaded a 119MB video to an FTP server in just 2 minutes and 43 seconds. The UML290 averaged 5.5 MBps on, which is just a bit behind the LG VL600 (6.0 MBps). That's good for a data rate of 12.8 MBps, which is just about as fast as the LG VL600 in the same location (12.7 MBps). We then downloaded the large program (a 147MB file), which took just 1 minute and 32 seconds.

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