Hi. Today I had some problems with my LTE signal (RSRP). Anyway It's solved, but I have me a doubt because when I disconnect the U.FL connectors from R11e-LTE card, I see that the first "port/connector" says "AUX" and the second "MAIN". If I connect only the AUX, it connects only with 3G but never I have Internet connection, then, if I connect the MAIN, "magically" Internet works, and then if I disconnect again the AUX port, nothing happends, all normal.
My question is: What is the purpose of the AUX connector?