Keeping mobile in vibration mode is safe ????

I agree with the two previous responses. Radiation comes from the transmitter. No matter what you do, a phone still emits radiation.. the vibration has nothing to do with radiation. The only negative effect of the vibration I think is that it could shorten the life span of your phone. There are some phone that are better left without using the vibrate function, some phones are sensitive and fragile.

I don't know about this. I think there's no changes even if we turn on our cell phones to vibrate because radiation is still there even you silent mode it. Remember using your mobile phone near radio,you can still hear the signal that your going receiving message, so no use. But if you ask me if vibration mode is safe I guess yes most especially when your out of home and using your cell phone at public places. I never turn on my ring mode when I am out, it's hard to expose cell phones right now.