​Enable ADB on the device.Open SIM Unlocker Pro.Connect the device to SIMUnlocker Pro.Go to FLASH/SERVICES.Select MTK PRL/V6 → V6 Samsung and choose model A156U.Return to the Main tab and click the Unlock button.Wait while the program reads the device information.When prompted, put the device into MTK Mode using the appropriate test point.Perform the test point and wait for the program to detect the port and complete the process.Confirm that the message "Network Unlock...Debes estar registrado para ver los enlaces