The pattern I've noticed, is that when I get the dreaded 'no data connectivity' box popping up, my signal strength can be strong but yet I show no signal type by the signal bars (3G, 4G, 1X). Until a signal type shows up, I can never get data regardless of how many bars I've got. This pattern seems to repeat every time I can't get data. This seems to happen in either solid 3G areas or mixed 3G $ 4G areas.
Anyone else notice this?