How to sign out of an apple Id on an iPhone I lost?

I lost an iPhone that was updated to ios6. The new update lets you get things on the App Store or iTunes without putting your password and that is a big problem. I don't want someone to have access to it.

Be on a safer side change your password.

I don't have an apple ID. Though I think you can prevent unauthorized access to your account by changing your current password.
Login to your apple ID from some other place and then change your password. That will make it impossible to login to your account again from the lost phone without knowing the new password.

Tell itunes at apple.com/support to disable the account. Or go into you itunes account in the itunes store and de-authorize the device.

  • Will Apple automatically sign you out if you change your Apple password? My sister has my mums old iPhone which has my stuff logged in and she told me she could see my messages and I got a little freaked out and I wanna know if Apple logs you out automatically if you change your password ;-; (The phone is supposed to be mine soon.)
  • Why does gmail sign me out of my account every time I close my safari app on my iphone? This is a recent development and I'm starting to get really irritated. It started happening today after I cleared my history. Before today, I could close all my apps and when I opened them I would still be logged into my gmail account. This is no longer the case, and I'm not sure why. I cleared my cache and enabled cookies, so I don't understand why gmail is doing this. I've probably tried logging into my gmail account 10 times trying to fix this.
  • When you change your twitter name does it sign you out from the iPhone app? My mom took away my ipod and computer and I changed my twitter name during so she doesn't read every one of my tweets (she probably saw a lot of them already). I know that when you change your username if signs you out of the computer, but does it sign you out of the iPhone/iPod app too? (I can't even delete the twitter app or sign out on my ipod because I don't know where she put it)
  • What with apple if i want to sign out of my iphone i had to re-enter my password? I want to know this i could sign out my account thru my phone with no message ok but now since new update i want to sign out but it tell me this i need my own password to sign out seriously? once i click sign out should just sign out not make me re enter my password