Vivo V9 Youth Remove Pattern/Pin Lock Done (PD1730BF) No Dongle Required

Pattern Lock is a safety effort that protects devices, for example, cell phones or tablets, and which is favored by numerous individuals to PIN codes or content passwords. It is utilized by around 40 percent of Android device proprietors. So as to get to a device's capacities and contents, clients should initially draw a pattern on an on-screen network of dots. On the off chance that this matches the pattern set by the proprietor, at that point the gadget can be utilized. Be that as it may, clients just have five endeavors to get the pattern directly before the gadget progresses toward becoming bolted.

In this tutorial, you will learn how to remove or reset the Pattern (Lock Screen), Pin or Screen lock on Vivo V9 Youth smartphone that has  Qualcomm processor and non-removable battery. Note that this method is 100 percent tested by me on Vivo V9 Youth. This procedure is also known as the Factory Data Reset or Hard Reset. Kindly read the instructions and apply carefully. Before starting the procedure, you will need to download the following stuff.

Pre-Requirements To Remove Pattern/Screen Lock

Qualcomm USB Drivers For PC
QFIL Qualcomm Flash Tool v2.7
Programmer File For Vivo V9 Youth

How To Reset Vivo V9 Youth Pattern/Pin - Step By Step Guide

1. Download and install Qualcomm USB Drivers on your PC (Skip this step if already installed).
2. Extract and install QFIL Flash Tool on your PC.
3. Download Programmer File For Vivo V9 Youth.
   
4. Turn OFF the phone and open its back cover, Remove battery connector, Connect phone with PC in EDL mode by shorting TEST Points.
   
5. Once phone successfully connected in EDL mode you will see QDLoader 9008 Port in Windows Device Manager, Launch the QFIL Tool, Select Port, Select Build Type to Flat Build then browse and select prog_emmc_firehose_8937_ddr.mbn file.
   
6. Goto Tool menu and select Partition Manager.
7. In Partition Manager area, Right Click on user-data then choose option Manage Partition Data.
   
8. Raw Data Manager window will open, Click on the Erase button, press Yes to confirm the action.
   
9. Once it is completed, you will see the message "Finish Erase Data Block".
10. Disconnect phone from PC, insert battery connector and turn on the phone.
11. The phone will automatically reboot into recovery, perform Wipe Cache Partition and then Reboot System, All is done :)