Ok, so last year I met this Russian kid at a tech camp in the US, and he showed me what initially looked like a standard-issue HTC 10. He told me it was a special version of the HTC 10 known as "Mark 2". If it matters, he also claimed that when he used the OEM Unlock option, that it offered to him to root the phone and that that was how he rooted it. I'd like to know what this weird phone is. Thanks in advance for any answers/clues as to what this phone might be.