Protecting Your Dell Streak 7 Tablet 113Protect Your SIM Card with the SIM LockPassword (on 3G model only)You can protect your SIM card against unauthorized use with apersonal identification number (PIN). After a PIN is enabled to lockyour SIM, you will need to enter the PIN each time you turn on thedevice in order to unlock your SIM.NOTE: The SIM card will be permanently locked if you enter theincorrect PIN for three consecutive times. You must then enter thePersonal Unblocking Key (PUK) to unlock the SIM card. Contact yourservice provider to obtain the PUK.To enable the SIM card PIN1 Touch the Home button → Apps button →Settings → Location & security.2 Touch Set up SIM card lock under the SIM card lock section3 Touch Lock SIM card on the SIM card lock settings menu thatappears.4 Type your SIM card PIN, and then touch OK.To change the SIM card PIN1 Touch the Home button → Apps button →Settings → Location & security.2 Touch Set up SIM card lock under the SIM card lock section3 Touch Change SIM PIN on the SIM PIN menu that appears.4 Type the old SIM card PIN, and then touch OK.5 Type the new SIM card PIN, and then touch OK.6 Type the new SIM card PIN again, and then touch OK.