I was planning on canceling my 4G aircard line and using the MHS on my TB. My problem is that it rarely stays connected for longer than a few minutes. After a bit I'll lose the 4G icon on my phone, the MHS will say it's not ready, a few seconds later the 4G icon will reappear and the MHS is ready again, few seconds later the 4G icon will disappear and the process starts all over. The 4G coverage here is great, I normally get fantastic speeds and the 4G icon never disappears when I'm not using MHS. Anyone else have this problem? Any suggestions?