HTC One M7 :: Invalid Connection Or MMI Code Error

I got my HTC one yesterady. The build quality of this phone is amazing. But, there are a few things that annoy me with this HTC Sense version - When I check my data usage - on the dial pad I select *328 and then select the result "AT&T View Data Usage [*3282#]". Then it will say USSD code running, after that I get an error message "Connection problem or invalid MMI Code." I also see the message that "...A message will be sent to your phone". I am still receiving the message with my data usage, but the invalid MMI code is annoying.

When I select the phone icon from the dock, it always shows me the "Last Call" I have to scroll to the right to get to the call history - any way to make the call history as default selection?Next one is about the dock icons. It seems like I can only change these icons from if I'm in the App Drawer. If I'm on one of my home screens and move the dock icon to the screen, the icon gets duplicated on the screen and the dock icon remains.

BlinkFeed won't be as bad as it is made to be if you can select which feed you can see at what position. For example, I added my Calendar app to the feed, but to get to that I've to scroll down couple of pages. It would be nice if I can see my Calendar as soon as I log in into my phone.