I was just testing out Android Device Manager and I tested the lock feature. I entered a password, as requested, and the phone was locked. I was told that since I already had a lock screen on my phone, the password wouldn't be needed. I went back to Android Device Manager and there is only a "lock" option, not an "unlock" option.

Now I can't access my phone since it won't allow me to enter the password on the phone, or unlock it from Android Device Manager.


you have not mentioned which phone you are using, but i found this step in XDA forum, and this seems to have solved it. Could you check if one of the solution helps you: xda-adm-unlock, check out the post #3 by maysider. Here is the complete snip of the sollution from XDA:

so the BUG is "made by Samsung". Samsung just do not accept any correct PIN or password (maybe because of "wrong" keyboard). could anyone tell me how to remove the lock without wipe? thx


solution 1) just if you have debugging mode on then follow this solution http://maxoberberger.net/blog/2013/08/unlock-android-device-using-adb/

solution 2) just if you can change your keyboard for another (if you are allowed when entering password)

solution 3) just if you have Samsung account, log into Samsung Dive >> "unlock" (my case)

solution 4) no debuging mode + no keyboard solution + no samsung account? >> just and only wipe through recovery or Google Device Manager

Happy now, but I was lucky

SAMSUNG BUG in 100 %


Edit by Izzy: The link with "solution 1" proposes changes made with ADB, which require root access:

adb shell
cd /data/data/com.android.providers.settings/databases
sqlite3 settings.db
update system set value=0 where name='lock_pattern_autolock';
update secure set value=0 where name='lock_pattern_autolock';
update system set value=0 where name='lockscreen.lockedoutpermanently';
update secure set value=0 where name='lockscreen.lockedoutpermanently';
adb reboot

This will unset your device lock completely, as if you did not have defined any.

| improve this answer | |
  • Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. Otherwise, your answer becomes useless in case the link dies. For further hints, please see: How do I write a good answer. – Izzy Jun 4 '15 at 12:38
  • Okay, I have updated the answer with the actual content from the referenced site. Is this the right way... – bbh Jun 4 '15 at 12:42
  • Much better, one issue left: the link in the quote is broken. I've fixed that up. (Note, before you ask: No, I did not downvote this answer) – Izzy Jun 4 '15 at 12:52

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