I ended up getting a full 7 days of usage out of my ZTE Open before I had to charge the battery. Granted this was VERY light usage with just a little data and a few calls each day. Now that I have had it for a few weeks I am really wishing that ZTE would get around to updating the phone to the new Firefox version. Some annoyances that I have run into is the browser remind me of my early days with a blackberry Curve trying to play a PHP game on it. Slow and Very slow at times. I still think it has great potential. The dialpad is very large on the screen and easy to use. The sound comes across clearly and the picture taking is manageable. There doesn’t seem to be an LED flash so no flash light apps for this phone.