Today, my phone decided to change my unlock pattern by itself. By googling I found that some users solved this by restarting their phone. For me, no matter how many times I restarted, the pattern was not accepted. The unlock feature at https://findmymobile.samsung.com/ did not work, as it had apparently not been set up before.
I then chatted with Samsung support, that:
Samsung support did not suggest that:
Instead, I could only use a backup that was three months old as that was apparently the last backup that was made.
When I later chatted with support again to ask WHY I was never presented with this SIMPLE and VALID solution to a problem caused by their product from the start, I was met with excuses like "Because factory reset can break your phone" (No, then why is it an option in the regular settings of the phone?) and "If you used the backup feature, it wouldn't have helped as your phone would be locked again" (No, I'm using my phone with the three month old backup right now!).
I just wanted to share this, in case someone else runs into Samsung's "Pattern change bug" like I did. I've seen hundreds of people on the internet with this issue, and after my run-in with support, it just feels like they don't want you to know the solution, so their service centers can run a similar scam as Apple does: Namely overcharge you for service.