Hairline Crack? ! | Android Central

There definitely is something wrong with the QC on them... I had the first hairline crack not even 2 days after I got my s4, I babied the hell out of it, I can say that with 100% certainty nothing happened to my phone during that period to cause it to crack, I babied the hell out of it. I have no reason to lie about it, I ended up coughing up the $200 to fix it and nothing I can do now. Never had an issue with it since, however seeing these reports definitely leads me to believe there's a percentage of screens out there that have some issues like this