First: aside from using GoLauncher EX and a few installed apps, my phone is stock - not rooted. I waited patiently for the update to push rather than forcing it. Since the update, though, I've had a few issues.
The first and most frequently encountered issue is that I cannot seem to send picture messages - to anyone. Regardless of whether I have mobile data or wifi or both enabled, every picture message I send fails. And today, i think it keeps retrying because I am getting a "failed" message every few minutes.
The second issue I encountered just today is that, despite having "battery-saving" auto-brightness enabled, the display cranked itself up to retina burning levels and I was unable to manually readjust (with auto disabled, the phone did not respond to the slider) and I had to restart the phone to turn it down.
The third issue is that twice the phone has randomly reset itself. Once while I was playing the battery killer game Angry Birds and once while the phone was sitting on the couch next to me untouched.
The final issue only happened once (so far). Yesterday, I was unable to unlock or soft-reset the phone. The touchscreen did not respond at all. I had to remove the battery to restore functionality.
Has anyone else experienced any or all of these issues and are there remedies out there? I have not done a factory reset for fear of losing all my installed apps and settings.
As an aside, the battery life has been less than stellar since I bought the thing and I have not noticed significant improvement since the update. It seems I have a choice - use the phone or save the battery life.