Hi, CarolinaW I've fixed my issue by spending more than 24 hours on internet remember that, i also tried to use google sign in option from play store & google find my phone as well, but it was all failed. after a lot of page visits and watching youtube videos, i was disappointed but i think on 5th or 6th page of google search results there was an article with the title : "10 Solutions to unlock pattern without losing data" so i read that, there were same things that i read before, like drfone, etc. etc. but at 6th or 7th point i saw a word "Samsung Find My Phone". i thought to try this, even i knew this site before but it was not coming in my mind at the time of trouble. so i tried to login on Samsung Find My Phone, just logged in, and clicked on "Unlock" That's it !! It was just unbelieveable !
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