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2015-03-31 03:53 PM
You may need to perform a software repair using PC Companion.The process will erase all internal memory.You might need to charge your device for about 1-2 hours before so the device has at least 60% battery.
Make sure the device is not connected to computer or laptop and turned off (sometimes you have to press power button and volume up until the device vibrates 3 times or on some devices you have to press the small button near the SIM tray or on the back of the device).
Open PC companion->support zone->phone/tablet software update->repair my phone/tablet blue highlighted.Follow the steps given,do not connect your phone until prompted to press volume down while plugging USB cable. If PC companion does not start the repair process, you might need to run it in compatibility mode with Windows 7 (in some cases XP).
Also,take a look here:
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2016-03-03 10:35 AM - edited 2016-03-03 10:36 AM
I am using xperia Z2 N I forgot screenlock pin n now i can't open my phone please give me advice what should i do now?
2016-07-30 08:04 PM
2017-01-21 12:25 AM
Hi. I also forgot my screenlock password and keep asking for the Pin how can I update the service anyway as what you've said in other thread I've read it
2017-01-31 11:56 AM
Have you managed to resolve this yet? If not you can either perform a software repair using Xperia Companion, do note that this will delete all data stored on your internal storage and the screen lock will be removed in the process, since you can't unlock the phone there is no possibility to perform a backup or if you have a Google account in your phone you can try and set a new screen lock on your phone using Android device manager.
Log in with the same Google account that you have in your phone and wait for the service to locate the phone > press "Lock" and enter the temporary PIN code twice, unlock your phone with the new temporary PIN code.
Let me know how it goes!
2017-04-21 12:22 PM
Hi @Rn7, sorry to hear about that.
I'm afraid I won't be able to assist you with a new SIM Pin code since these codes are handled by your service provider (operator) so I'd recommend that you get in touch with them and they will be able to assist you!
Let me know if that helps!