I had high hopes for the 5G Gateway as my friend had it with no issues for over a month with 500 mbbs download and up to 100 mbps upload. My experience has been terrible.
The first 3 weeks (trial period) it was great; I was getting an average of 200 mbps download and 15 upload which was fine for my purposes. Then the speeds got slower. I added an omnidirectional external antenna and at first it seemed to help; more than doubled my speeds. A week later the devise began to power cycle every few hours. I disconnected the external antenna, but it just got slower speeds and the power cycle problem incread frequency. I added a cooling fan to help with possible over heating and no help. After many hours with tech support I was advised to swap out the device and sim card.
Did that and was issued a newer model and discovered a new problem. "SIM card not detected or supported". This happened within just an hour or so of getting it home. Took the sim card out and reinstalled. It was good for a while, but still persisted at least a few times per day. After 10 days it started happening hourly; so I went back to the store and they gave me a new aim card. Per them it had to be the problem. Well it continued so I went back to the store and they said they can't help me further to call home internet support. Their only solution was to ship me a new system. I'm still awaiting it and now a day later the power cycling is starting again.
I'm at my wits end and I've scheduled Centurylink for install.