When we activated our phones this afternoon, mine was on 4G but my husband's was on 3G... and we were in the same room. A quick call to VZW revealed that some folks were having this issue. The rep had us pull the battery for 10 seconds and restart. That fixed the problem right away. Not sure if anyone else is having this problem but since this is probably a lot of people's 1st 4G phone I thought I'd put that out there.