I have a galaxy s4 from us cellular. It was purchased the first week of release and the watermark sticker under the battery is missing. My wifes, mom, and sis in law are also missing the sticker and us cellular voided my warranty cause of that. I went to a diff store in my city and one of the employees there is also missing his sticker. Us cellular wont do anything about this. Just seeing if any of you would mind checking your phones to see if yours is missing too.