my Droid 3 unresponsive in cold weather. Shuts itself down. It is carried in pocket, but pull out and sometimes is OFF. Pulled battery and used hair-dryer (LO-temp) for a minute or two, at least 6-8 inches away and works, but does again when walking outside for more than 10-15 minutes. ???? Phone is just over 2 year old and do not want to trade off. Anyone else experiencing this? ..... Thank in Advance