[Q] Is it possible to bypass screenlock without any preparation? - Android Q&A, Help & Troubleshooting

My friend recently took my galaxy core (running android 4.1.2) and bypassed my PIN lock in a minute. He only told me that there is "a special code" to bypass any android lock. Is it true? Is my phone isn't safe anymore?

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[Q] Bypassing pattern lock

Hello
some days earlier
my freind just told me that he can bypass the lock screen of my phone...and he does it so
he told that he dont know the lock pattern but he can bypass it...
i again told him to do his trick after changing pattern to the hardest..but he again does that in less than 5 minutes...
Does any one know how to do that...?
Note-He doesn't do it with pc or any other device
Which device you use?? and pls mention the OS version as well...

Lollipop: PIN unlock vs. Device Encryption Password

I just got a Lollipop based 2nd Gen Moto E phone. I want to set up a Full-device Encryption password and use a (different) PIN as my screen unlock. Does anyone know how to do this?
FWIW, I had exactly this setup with CM on my old Galaxy S3, and I would like it again.

GT-I9100 updating to 4.1.2

Hello,
I have a Samsung S2 (GT-I9100), the current android version on it was 4.0.2. Recently i tried to upgrade it to android 4.1.2 (I guess it is the latest supported version for this phone isnt it?).
I tried using Samsung Kies and Odin, but always end up with the phone getting locked (I get that SIM Network Unlock PIN message).
I even tried with the "Samsung S unlock" app, but it failed to unlock it.
However, when i downgraded to 4.0.3, the "Samsung S unlock" app unlocked successfully.
I have tried several things, i called my operator to ask for the PIN (but he had no idea what an "unlock PIN" is and asked me to change my phone instead ... -.-), i even tried to extract the "hash" from my data file, and i tried to crack the hash with hashcat, but it failed. I even tried to dial *#197328640#, and proceed as some tutorials has indicated, but i couldnt go beyond the "PHONE CONTROL" menu.
So i have some questions, im planing on installing cyanogenmod (android 5.1.1), would that removed the lock? (i cant try it now, i dont have the phone on me), like is the lock only for samsungs ROMs? or it is like HARD-CODED in the phone?
Another thing is, i was taking a look at where the lock functionality is located (in the source code), and i think i was able to find it in the "hidden.img" file, in an application called SecPhone.apk (odex), so my question here is, if i somehow was able to bypass this function (like always return true or something) then repack the hidden.img and install the new version, would that work? Or i shouldnt waste my time on that?
(And can anyone provide me with the source code of the Android 4.1.2? its a bit hard and annoying to navigate though the code on the browser, i tried to download it using the google repo tool, was running that under VM (as it only works on linux), and it i didnt have enough space, so it failed, and im a bit to lazzy to re-install the VM ...)
One last thing, while examining the code, i noticed that the unlock function takes 2 parameters, the PUK and the PIN, and only if the PUK is null then that function will use the PIN, so would introducing the PUK as the unlock PIN would work?
Thank you for your time ...

Requesting for help with unrooted Vodafone (ZTE) Smart Ultra 6 stuck at lock screen

Hi all, I have an unrooted Vodafone Smart Ultra 6 smartphone (manufactured by ZTE) running the original stock ROM (Android 5.1) and USB debugging is believed to have been disabled. The phone boots up to the lock screen as normal which uses a gesture pattern. For some reason, one of the matrix's dots that is part of the pattern to unlock the phone became "unresponsive" (part of the touchscreen is broken?) and I have not been able to complete the pattern's path, therefore the phone remains stuck at the lock screen. I have tried to use ADB to remove the "gesture.key" file but was unsuccessful because of the phone's unrooted nature.
Is there any other way to bypass the lock screen? Thanks in advance.

a21s help bypass google lock

need step by step help.
i have an a21s (SM-A217M) that a youth who actually owns the phone. he bought it off another person . the phone was open (no passwords)
and he decided to add pattern lock and a 6 digit passcode.
reboot the phone after all the tinkering , the phone doesn't want to take the passcode and you need the pass code before you can use the pattern .
so he digs up online and decided to factory reset the phone now he cannot access the phone . and the email he used to bypass the google lock is not allowing it to unlock.
what can I do to remedy this ?

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