Been having this problem since I got it 4 weeks ago, when it locks up or wont respond on websites I power off and then when I wait for a minute to turn back on it wont. I end up pulling battery and waiting a minute to three minutes and try again and sometimes it takes doing three times and 20 minutes before I can get it started up again. I don't want a refurbished phone so is there an answer or fix for this problem?