I have both an Android phone and a hotspot. One on each of TWO different cell services.. Sometimes one of them is FAST (Phone is currently over 100Mbps) sometimes slow... The phone also does Wi-Fi Pass through
The Box tested this AM at about 25Mbps. (There are other differences as well like the box is a TRULY unlimited plan).
But which one I use depends on relative speed 25 is fast enough so I use the 100% Unlimited box.. but in another place the box is down to 1-2 Mbps and the phone is around 80 So guess what I use.
That is how I would recommend. Have both but use whichever works best.
NOTE: in one place the phone was 0.. I mean NO SIGNAL and the box broke 100Mbps
THe box is 50/month via FMCA Tech Connect in my case Truly Unlimited SPRINT
The phone.. is T-Mobile.. and the funny thing is they just merged.