Reactivation lock  in Samsung is store on the eMMC. Meaning that doing a factory reset or flashing the phone will never remove it.

Most times,our customers do complain of being locked out of their phones due to this reactivation lock. If your find my phone or reactivation lock is on and it happens that you did a reset the phone 

Your phone will demand for the user Samsung account and password that was previously added on the phone.
Reactivation lock is similar to Google account lock in MTK devices and other brands.
In this guide I want to show you how to remove reactivation lock in Samsung, tested in Samsung  SM-G900V or SM-G900F.
It also works in other models.

Requirements:

1..OTG card reader and Memory card or OTG flash drive

2..SAMSUNG MOBLE ENROLLMENT.apk

DOWNLOAD SAMSUNG MOBILE ENROLLMENT APK

3..Apex launcher.apk

4..SAMSUNG ACCOUNT

Now, copy the Samsung mobile enrollment app and apex launcher to the SDCARD... on the start up screen of the Samsung phone setup where you are being asked to put the ID and password​,plug-in the OTG card reader and wait till the files manager pops out and

Located the apps you copied and install them and open... inatall the apex launcher last and select open to enable you lauch the home of your phone.


Now,on the Samsung mobile  enrollment login...sign in with the desired Samsung account you want (if you don't have create a new one)
You may get error or incorrect password(make sure you put a valid password)

READ ALSO: SOME ANDROID APPS YOU WILL FIND VERY USEFUL

Go back to settings of your phone,then to application management *all* and locate Samsung accounts and disable it.


 Then restart the device..
Your done
You device will now boot with the account you signed in with.(if login or boot or restore takes time,reinsert the battery and try again)
Tested and confirmed..