iphone 4 no vibration alert when the ring/silent switch is turned on.
I am a new iphone 4 16gb user recently, i find out something really weird with my iphone especially with the ring/silent switch. when i turn the switch to silent mode, the phone did not give me any vibration alert as it used to be. i have gone to sound settings and see that the vibration setting for silent and ring is on. from my experience, the phone should give vibration alert once when we turn the phone into silent mode, but my didn't. next, what i did is turn the switch back to ring mode and put it back to silent mode and the phone start to vibrate again. so, in conclusion, whenever i turn my iphone to silent mode via the ring/silent switch and if the phone doesn't give me the vibration alert, i have to retry again. by putting it back to ring mode and then switch it back to silent mode just to see whether the phone is vibrating or not. i find it weird and go for a replacement ASAP today. however, the replacement also have the same issue as the previous one.
so far, this issue has happened to the replacement phone twice. i had tried the apps called ibrate as what others suggested out there. i have the ibrate on for couple minutes and tapped the right corner of the phone. what i want to know is, is anybody out here have the same issue like me? is my iphone 4 acting normal or maybe there is hardware issue with the phone? will this issue happen again even after i use ibrate? that is all i want to know. people, please answer me immediately. thank you.
Henry
iphone 4, iOS 4