Samsung Android phones running Android Lollipop or Marshmallow comes with FRP features.
In earlier version of Android, Hard Reset solves the issue of Gmail Lock.
1- What is FRP?
FRP stands for Factory Reset Protection.
It is an extension to Security for Android OS running Lollipop or higher version.
2- Did Samsung Flashing or Hard Reset Remove Gmail account?
Flashing does not remove Gmail account. It will ask for its credential.
3- How to make SBoot Files to unlock FRP?
SBoot files are the part of Firmware.
First of fall, you have to download Samsung Firmware.
Now, do not unzip and open with Winrar.
There would be MODEM.bin file, drag it to desktop.
Your Sboot File is ready. Flash it with Odin, then Reset FRP using Miracle or Z3X pro.
Samsung FRP using OTG
1- Hard reset the device (Power + Volume UP + Menu)
2- Download the Samsung Bypass tool in Pendrive.
3- Connect the phone to OTG cable.
4- USB storage file will appear at phone.
5- Click on APK file.
6- Open with Package installer.
7- Installation blocked. Go to Setting and click on installation from Unknown source.
8- Install the APK file.
9- After installation, open the App.
10- You will be in Setting of your phone.
11- Select Back up & Reset-> Factory data reset ->Reset device -> Delete All.
12- Phone will restart.
13- Now, your phone will not ask for Gmail.
If OTG bypass Fail then try using SideSynchronize or without OTG cable.
Samsung FRP unlock using SideSynchronize or without OTG cable
1- Download & install Sasmung side synchronize.
2- Hard Reset phone. (Power + Volume UP + Menu)
3- Then it will ask for the password of the existing gmail account.
4- Run side synchronize on PC and Connect phone using USB cable. (Both Should be connected to same Wi-Fi network)
5- Menu will appear to choose Browse in Phone, Select Google chrome.
6- Unplug Cable.
7- And enter link: goo.gl/vzoLBx or goo.gl/93nCX5
8- Download the file.
9- Term & Condition page will appear . Click on agree.
10- Open Samsung galaxy apps. Update it if required.
11- Search for ES file explorer and Download it.
12- Create Samsung account and if you have existing log in.
13- Open it.
14- Click on Download.
15- Install the App (ES File Explorer).
16- Open ES File Explorer.
17- Search for Google account manager & open it.
18- Choose Type email & password below Google Account manager.
19- Google account manger will open & Click on try.
20- Click on Three sigh symbol on the upper right side.
21- And choose browser sign in.
22- Click on ok and Login to your new Google account.
23- Restart phone.
24- Goto Setting -> Back up & Reset.
25- Factory data reset and Delete All.
Now, no Google account has been linkup to your Samsung Phone.