Is it possible to backup data from a locked android phone?
So i found a way to unlock my phone (Vivo V7 Plus) without losing any data !
Special thanks to @alecxs for guiding me through the process !
In order to unlock the PIN lock, I open my phone case and short the test point in order to get into EDL mode (Note: Different phone have different test point, search where is your phone test point before proceed. )
After successful short the test point, I can see the &quot;Qualcomm port 9008&quot; is open !

When Qualcomm port 9008 is visible from device manager, I proceed to run the software. So, here is the MAGIC part! I used a tool from MRT but its cracked by a developer called officialroms. The different between cracked and original MRT software are cracked version doesn't have to buy additional hardware to make it work.
I clicked on start and the program run until it show all is done, after that I restart my phone and everything worked !

Here is the instructions link that i follow:
https://www.youtube.com/watch?v=iUOFvRkmBMc
https://www.youtube.com/watch?v=Enm-8CvGqIY&amp;t=189s