Got the M9 last month. Did a road trip to Canton Ohio so most of the trip was on I-90.
Horrible experience. Data kept dropping out (I was using Tune In to stream sports talk), roaming triangle, that well-known data connectivity ! sign which really is evident when you're driving 350 miles.
At one point, when using GPS for Google Maps and streaming, the M9 crashed and rebooted.
I stopped at a Sprint store in Canton where the sales rep tinkered with it but the problem still persists.
Bright side was I got speeds of 50+ MBPS in Canton.
Here in Auburn, it's the same as my M7, highs in the upper 20s. I'm a little disappointed, I thought having Spark here would mean the 50+ speeds here.
But this data connectivity issue, ugh, I know Sprint is aware, from reading their forums, but why does this phone and other HTCs have this issue when switching towers or going from LTE to 3G? Changing settings, updating profile, PRL does nothing.
Wish Sprint could figure this thing out and issue a fix.