Occasionally over the last few weeks I've heard strange sounds from my Alcatel Revvl 5049W on T-Mobile. It's usually on the lock screen when I'm not using the phone. Sounds include the opening few seconds of the Universal Studios opening theme, a woman screaming, and a muffled conversation between an man and a woman in a foreign language. The phone also started running really slow and the battery drained faster than normal. I've since factory reset my phone and changed all my passwords. There have been no recorded unauthorized logins on my Google, Facebook or anything else that records that information. So far I've noticed no more weird behavior on my phone, but it had been so intermittent and random that it may not have happened yet. Anyone else experience this and know what it is?