I don't know if there is any relation, but when my wife is trying to access the net or trying to download something, she gets the same pop up and wonders why. Now, her, being my wife, I always have to tell her to look and see what it shows on the top, 4G, 3G, 1X or blank. 9 out of 10 times, it's either blank or 1X.....hence the reason why she gets the alert. Rebooting solves the issue. Both of our phones have the update but only her's has this problem. Her phone also started having this problem more frequently in the past 2 weeks.