OK, so, I know the phone defaults to "Nighttime saver" mode on the battery. I created a "custom battery saver" mode that was fairly similar to "Nighttime saver" -- only the hours were changed to be a little closer to what I consider "nighttime." Data got turned off after 15 minutes of inactivity between 12:01 a.m. and 7:25 a.m. It wouldn't go back on. 8:00 a.m. -- no data. I manually get it to refresh each of my email accounts, but it won't go back to pushing email (despite being set to do so). I have to restart the phone to get it to restart pushing email. (I forgot today, and didn't notice until noon that I'd missed 4 hours of mail.) I've switched to Performance Mode on the battery, which, I assume, will solve the problem. I guess my question is: Is it a known problem that data push doesn't go back on? Or am I just special?