Pretty worried. I bought the GNex yesterday, got instructions to activate later. Got in my car and noticed a small scratch on the back bottom of the phone and a large piece of dust under the screen. So I went back in, had them return that one so I could re-buy a replacement one. Took a while bc they had to add my upgrade back but it worked fine. Bought the second GNex, got a NEW micro sim to use when I activate later. So, went to work, called the activate number from my Droid X, entered the numbers it asked for. Last step was to put the sim in the new phone and boot up. Did that and I wasn't able to get any data for a good 10 minutes or so (although I read that from a few other ppl too here so not sure..). Finally picked up 3G, works fine for data and calls. This was at 12:30 pm. Now, the next day, at 9:22 am Friday, I have not ONCE seen a 4G signal or even the "4G" word next to my bars on the phone. I work in Danbury, CT which does not currently have 4G coverage, but I live in Shelton which is fully covered (down to my exact address, I checked on the coverage search map). I have not seen it hit 4G one single time since being in town. I called the store and they guy told me that if there was an issue with the sim or activation, I wouldn't even be getting 3G (which works fine by the way so far...speed tests put it at about 1 Mb). I also tried calling the activation number again from a different phone to try to reactivate it again or something, but it just transfers you to the automated response since the phones already activated. Also, a factory reset did nothing. I am rooted with an unlocked BL. Also tried removing the sim and battery, rebooting, checking data settings, the works.. What do you suggest I do? I really don't want to have to return the phone, as this one is defect-free otherwise, and it's hard to believe the phone is the issue. Is it still a possibility it's the sim even though I get 3G fine?? I haven't read one post saying that haven't gotten 4G AT ALL like me.. EDIT: My friend told me that with 4G, it really only switches to 4G when downloading/transferring data and then sticks at 3G otherwise, but I don't see 4G any times at all, ever.