Got the 6+ yesterday, didn't actually notice this but I just did. Is the vibration motor/whatever less strong compared to 5s? The whole table shakes if someone calls to my 5s, but iPhone 6+… It's just a vibration that I can barely feel. Could that be the Apple Leather Case inhibiting it? Don't want to remove it because I just-just got the 6+ in that case… Oh and 5s is naked. Thanks!