Hi,
I've had a MiFi 5510L Jetpack for a few months. It worked great for the first couple of months. However, in more recent weeks, it stops working suddenly, sometimes several times a day. When it stops working, our (my housemate and I) browsers cannot open any website (DNS error). However, the device shows connectivity (at least 1 bar, and 4G) when this happens. The issue happens more often when both of us are connected to the MiFi. There are no new software updates (I check frequently). The only thing that clears the problem is by turning the MiFi off and turning it back on again (sometimes removing the battery and putting it back in is necessary). Resetting also clears it, but the issue always comes back. It is quite disturbing - over the last weekend, I had to restart the MiFi at least 10 times. Sometimes the display on the MiFi looks strange, too (letters/graphics run off the screen, etc.) but that's not a huge concern. Is there anything I can do to try to rectify this issue? Thank you.