Hi, I recently bought the new 5S and I wanted to confirm if it is normal for the yellow LED not to be as bright as the white top one. For example, when using the phone as flashlight, only the top led is bright, not the bottom yellow one. Is this normal? Also when taking pictures, I notice the top one being way brighter. Sometimes it looks like the bottom one has no light at all, and all the light is coming from the top LED. Any explanation would be appreciated. Thanks.