Invalid PIN code A5 - Galaxy A3, A5, A7, A8, A9 Q&A, Help & Troubleshoot

I want to unlock my Galaxy A5, but I have not entered a locking code anywhere. I just entered the correct PIN and the phone is on, meaning that incoming calls work fine. But I cannot do anything else with it, because it asks for a code. I cannot turn it even off to do hard reset. Help please!

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I have wave secure on my phone....... i removed the sim and booted the phone so it locked..... i entered the wavesecure unlock pin and it unlocked and i have validated this on the screen.
but the phones lock screen is stuck and it will not accept my PIN even though im 100% sure its correct.
Is there a way to disable it or change it..... i have ADB access?
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Galaxy S5 unlock unsuccessful bug

I received my unlock from my provider. After turning on phone with unspported sim i got a message to enter unlock code. I entered it and it says : network unlock unsucessiful, and that message dissapear. But after few sec i got initial screen on samsung and i saw that network actually work and my phone is unlocked, i tried with thrid provider and also work. Is that some kind of bug in lollipop or ?
Did you test if the phone was already unlocked before entering the unlock code?
Maybe it said Failed because it was already unlocked?
Anyway, if the 3rd party SIMs are working, there's no problem is there?
Everything works, im just curious about that bug. I tried 3 different SIM and its unlocked

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hi,
I´ve got a situation here, from a cousin´s phone, he can´t get into menu. there´s a notification/shortcut circle on locked screen, and we can´t get through it. Phone has no pin or pattern lock, image below. Does anyone know wtf is that, and better yet, how to get passed it?
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well, as I didn´t got any ideas, backed up phone from adb (usb debugging was set), and hard reseted it. so thread may be closed.

Galaxy S5 G900W8 Cyanongen 14 dec 15 nightly klte phone wont process carrier unlock.

basic desc in the title.
I'm tring to perform a carrier unlock. I have the proper code for my IMEI but the auto screen just stays endlessly stuck saying Registering Sim network unlock... it doesn't error confirm reject nothing. resetting and toggling airplane mode do nothing. I've tried unlocking from the dial pad but it just says mobile networks not available.
I'm moving from rogers to telus Rogers sim card works fine, anything else seems to not work.
In the setting menu I can see various network providers, but I cannot manually connect to one.
It's been giving me difficulty putting stock rom back on but as I understand it the rooted OS shouldn't be preventing the unlock.
please send help.
Can it be cured with fire?

Unable to unlock with MI account after unlocking bootloader

Hello !
As written in the title I've just unlock my phone's bootloader.
And after rebooting the device, it's now in lock state and it ask me my mi account's password.
I use my phone number for log into my MI account.
Anyway I tried every password I'm using since 2012 but nothing worked, so I decided to reset my password cause impossible to guess it.
But even with that, the phone continue to tell me that the password is incorrect.
I try to relock bootloader, flash a global rom in fastboot mode and the unlock tool (wich also told me that my password don't match my account and I need a 6 digits verification code (wtf?)), but my phone is still locked.
Can anyone help me ? I really don't want to buy a new phone just because I did something wrong, I really messed up this time..
Cheers !

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