As someone who lives in an area with no wireline and no wireless internet availability (Ironic, since I work at an ISP) I have had to make do with my Verizon hotspot for the last couple years to get internet. Recently, however, I’ve found myself in need of an actual router to try and diagnose some NAT and uPNP related issues (turns out smartphone hotspots do not support upnp), and I’ve worked with Mikrotik equipment just enough to know they support LTE modems. For this use case, I’d like to hook up my smartphone to the USB port on the router and set it up on the LTE interface to provide internet. I have never tried using the LTE interface in RouterOS, so I was wondering if anybody has some kind of base guidelines for how I should set this up.
What i did was just USB tether my phone to a dedicated PC on ether1 of my tik, and set the 0.0.0.0/0 routing rule to a 192.168.1.XXX I addressed the pc, and then go to the adapter settings on the pc (I was running windows 7) and enable internet connection sharing, and viola! I was stuck behind verizons double nat, but it worked great until verizon implimented their 15GB caps on tethering.
Always wondered about your method though, but never could get verification when I pursued it in the forums, so I found a better source of internet and created a wireless link instead of using a dedicated computer and phone.