I had some sluggishness today (the phone, not me), and noticed that the 'sync' symbol on the status bar (the circular arrows) was on several times (I rarely, if ever, see this.) And one time, when I picked it up, and the bottom of the phone was hot. A battery pull seemed to fix all of this. Any idea what might have caused this? I didn't change any settings and haven't added or updated any apps in a long time. Think this might be a network issue? Do y'all think we might experience some network problems tomorrow and for the next few days with the addition of the iPhone?