iPhone 5S Screen Flickering
Had my iPhone 5S for less than 24 hours and have noticed the screen is flickering whenever brightness is turned up past 50%. Already spoke to apple customer service and did what they suggested by resetting settings and doing a restore but to no avail the screen still flickers. Anyone else having this issue and if so how did you correct it. Trying to avoid getting a replacement device if this is something apple is aware of and working on a fix. Thanks in advance for any help.
iPhone 5s, iOS 7, Actually on iOS 7.0.1