I've found that when I'm on a call using my Stratosphere 1, if I'm prompted to enter a sequence of numbers and I bring up the keypad on the screen, most of the numbers will not enter when I press them on the keypad, or the screen goes dark after about 1 second even if I'm in the middle of entering numbers. The only workaround is to turn on the speakerphone, and then I am able to enter numbers on the keypad with the speakerphone on. (This means obviously it's not a hardware issue with the sensors on the screen.) But if I'm in a public place, I don't want to have the speakerphone on and subject everyone to the sounds of all the voice prompts that I'm navigating while pushing keys on the keypad. Anyone found a workaround? The phone's software seems to be following a rule like: "If the speakerphone is not on, then when the phone moves away from the user's face, assume the user is not actively using the phone and let the screen go dark" -- where the bug is that it doesn't make an exception and keep the screen on if the user is actively pressing keys on the keypad.