Just to let you know, I went back to 8.1 tonight. Two times I could not get the phone to make a call. I selected phone tile and then went into the app menu and picked phone. No go. This is my daily driver and I need to be able to contact family. Each time I had to reboot. I noticed the updated outlook app is taking up more memory, I had about 300MB left. Also, since I went back, windows insider app will not load. Says it's not for my phone, so I may be out of this. :-(