My Battery flat out stunk the first few days of owning the S3, then after about 6 days it started to perform pretty well and last a good amount of time. But as of now my phone is just randomly losing power out of nowhere, especially while on wifi. I've lost 6% in the last 10 minutes? I can basically just watch my battery meter run down. And the dredded stand by time drain is rearing its ugly head again? Anyone seeing anything like this?