Why so sudden my iphone vibration isnt working Shall i send to service

Might be a hardware problem, but first go to Settings>Sounds and make sure Vibrate (under Silent) is set to On; otherwise it won't vibrate when you flip the silent (mute) switch on the side.

Might be a hardware problem, but first go to Settings>Sounds and make sure Vibrate (under Silent) is set to On; otherwise it won't vibrate when you flip the silent (mute) switch on the side.

Yeah, i've checked and the vibrate is on in the Setting.

So this means tgat i need to send to a service i'm supposed as for you said it is a hardware problem.

Thank you.

Yeah, i've checked and the vibrate is on in the Setting.

So this means tgat i need to send to a service i'm supposed as for you said it is a hardware problem.

Thank you.

You could try backing up your phone by syning with iTunes and restoring it as a new iPhone to see if it's a software problem first (see http://support.apple.com/kb/HT1414).  Be sure to choose to Backup at step 6.  At the end of the process your phone will restart and you will have the option to restore from and iTunes or iCloud backup, or to set it up as a new iPhone (choose the latter). 

Before restoring, be sure to import all your photos to your computer and back up your contacts (by syncing them with iCloud or Google, or to a supported program such as Outlook or mac Address Book, or using an app like My Contacts Backup) as contacts are not fully backed up in the iPhone backup.  If it won't vibrate once restored as a new iPhone then it's a hardware problem.