I have an ATT Blackberry and my husband took my phone by accident and the phone locks within 15 minutes - even though you can only receive calls. I then checked my bill online that night and my bill had WAP.CINGULAR like INTERNET MEDIA 20 TIMES IN A ROW....the first one said BLACKBERRY.NET then came all the WAP.CINGULAR 20 times in a row.......I want to know how could this have happened? My husband said all he did was put in a media card that was on his phone before........could the media card have done the WAP.CINGULAR on my bill? or could you unlock a phone by placing the media card or taking off the battery?