Define what you mean by disconnect...   Are you talking about the WiFi signal dropping, getting disconnects (resets while browsing using it), or is the 3G/4G signal dropping.

The 3G/4G signal. Wifi hasn't been a problem, I can still access the admin page when the signal drops off. 

I am widening if I am just in a bad location, even thought I am in the same location as yesterday. Is there a way to tell what the signal strength is?

The lights are not very useful for that.

Even the bars (or boxes) on the Admin page near the top is vague... however

you can go to Configuration -> Diagnostics and then select Modem Details and it will output a bunch of lines.

It will look something like below with the Signal for EVDO and LTE being what you are looking for.

MDN:         +CENSORED
ESN (hex):         CENSORED
Channel:         0
P_REV Indicator:         0
PRL ID:         15010
Band Class Type:         13
ERI Version:         5
Dormancy:         FALSE
Signal - EVDO:         0
Signal - LTE:         98
Battery Level:         85
Battery Charging:         1

Does your 4G light stay green or is it going red? Mine stays green but I lose internet of any kind, very annoying!

I have the same issue, mine stays green but no internet connection.

Seems like a device or sw issues with this device if others are experienceing the same issue.

Going back to the Apple store today to see if they have any other ideas....