Samsung J120f unlocking 100% success.

Unlocking Samsung j120f instruction with log detail.

 UNLOCK INSTRUCTIONS:
   Phone must be rooted!
  If the software can't root the phone automatically,
  then you must root your device manually.
  1. Power on the phone.
  2. Tap 7 times on 'Build number' in 'Settings'-'About phone' to enable 'Developer options',
     go to 'Settings'-'Developer options' and enable 'USB debugging'.
  3. Connect the phone to PC with USB cable, install drivers if needed.
  4. Select device in ADB settings.
  5. Press 'Unlock' button for direct unlock.
 
   To reset Google account activation or Samsung reactivation lock:
  1. Power on phone in download mode (turn off phone, press vol.down + home + power).
  2. Connect phone to PC with USB cable, install drivers if needed.
  3. Press 'Reset FRP/React/EE' to deactivate Google/Samsung/EE account activation lock.
    (Sometimes needs to perform 'wipe data/factory reset' once more, to complete this locks removal.)

Operation: Read Codes
Selected model: SM-J120F
Software version: 25.2

Checking hash file... OK
Waiting ADB device... OK
Reading phone info...
Model: SM-J120F
Android version: 5.1.1
Product code: SM-J120FZDDKSA
Phone version: J120FXXU1AOL5
PDA version: J120FXXU1AOL2
CSC version: J120FOXE1AOL1
CSC country code: Russia
CSC sales code: SER
HW version: MP 0.300
Phone S/N: R58H22H13JR
Modem board: SHANNON308
RF cal date: 20160224
IMEI:
Initializating zTool... OK
Running zTool, please wait...
Start... OK
Init... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data... OK
Reading nv data... OK
Checking NV data... OK
Calculating... OK
Please wait, calculating codes... OK (time - 00:00:06)
Freeze code: 28262708
NET lock: 61816379
Sub lock: 00000000
SP lock: 00000000
CP lock: 00000000
SIM lock: 00000000
For check lock status: *#7465625#

Done with Samsung Tool PRO v.27.7