Authentication required on Samsung Galaxy Tab 3 V. Go into Settings. remove the google acount and sign another one. Go into Applications Manager. swipe left for All Apps. Scroll down and find Play store and tap on it. Clear Cache, then Clear Data after that Tap on Force Stop. Reboot your phone. (restart the phone) To boot into recovery mode, start by turning off your Galaxy Note 20. Once completely off, hold the volume up button and the power button until the Samsung logo appears. Let go of both buttons, and after a few seconds, a black screen with yellow and blue writing will appear. This is the recovery mode. Tap "Usage Statistics", then hit the back button, and you're in Settings and can do a factory reset. If Factory Reset is disabled thanks to a security patch, you can instead create a new user account (going through and setting it up), then follow the very next guide below for the Turbo, starting at the second paragraph. Type anything where you have to type the email ID, then tap and hold on it to select it and then go to "Keyboard Settings". In there, select "About Samsung Keyboard" and open the "Open Source License". Tap and hold on the agreement page and tap on the 3 dots when the pop-up appears. Then, tap on "Web Search". Step 2. Enter Recovery Mode. Press and hold the Power and Volume Up buttons at the same time, and the Recovery Mode will appear on the screen. Step 3. Factory Reset the Tablet for Unlocking. - Use the Volume buttons to choose the " Wipe data/factory reset " option, and hit the Power button for confirmation. Follow the on-screen instructions strictly. On your Samsung phone which displays the welcome screen, tap on Emergency Call. Type *#0*# and press the dial icon. The phone will enter into diagnostic mode. Click on Next button on your computer. The "unauthorized attempt to factory reset" bypassing process will begin. Learn to Reset Galaxy Tab A with step by step directions to reset everything back to factory condition. Do a complete Factory data reset as outlined here and Samsung Galaxy Tab 3.0 Kids T2105 Factory Reset from Settings Menu. Power on your phone and unlock it. Open the Settings app. Tap on Backup & Reset and then Factory data reset. Now tap on RESET PHONE. If asked to enter the Passcode or PIN, enter the same and tap on ERASE EVERYTHING. Now, all the data will be wiped, and the device should reboot. 2. Soft reset the tab . A soft reset would be able to fix the issue when the above means fails. To perform a soft reset, you only need to press the Power button for more than 10 seconds and wait for the device to reboot itself. 3. Factory reset the device . Also, the last solution to fix this problem is to factory reset the Samsung tablet. Factory Reset Samsung Galaxy Tab 3 7.0 SM-T211 from Recovery Menu: 1- Make sure that your Samsung Galaxy Tab 3 is Off, If not, Then turn it off (Press and hold the Power key, and then tap Power off). And remove the Memory card from it. 2- Wait for 10 seconds. 3- Press and hold the Volume Up key + Home key, Then press the Power key. LrgaOR.