FOR THE PAST TWO years, Mifi has impressed me with its versatility. However, I've also learned to appreciate the limitations of the little portable wifi dongles.
When I attend industry events throughout Ireland, people with devices set to snoop for open wifi nodes often know I'm in the vicinity because I have two E586 Mifi dongles offering free internet access to anyone within 20 square metres of my Bihn bag where the dongle rests. One E586 has the SSID Topgold running with a Three Ireland SIM and the other shows up as Bern-ie powered by O2-Ireland. I get appreciative glances because my devices are often more resilient than venue wifi. However, I also know they misbehave and need to be reset occasionally, just as I expect to reboot my normal wireless router.
In my experience, my fastest Mifi service (using 3Ireland) also returns the most errors in DNS look-up. That means the Mifi cannot find the name server so the web page I need to use returns blank with the DNS error message. I cannot get a result by refreshing the web page--I have to disconnect my laptop from the Mifi dongle and reconnect it.
In other cases, both my O2 and 3Ireland Mifi dongles cause errors when connected to apps on my handsets. I can often work around those errors by selecting a different Mifi option.
In all cases, I've been able to correct data problems by resetting the individual E586 dongles by turning them off and then back on.