I had my phone off cleaning it and when I was finished I plugged it in. A green screen instantly came on with a message that says "Downloading... Do not turn off target". It also says in the upper left corner "factory mode (high speed). It has other phone information under it looking similar to the hard reset screen. I am in the US on Verizon. Anyone have any idea what this is? Android 7.0 maybe? I don't know if I should touch it or not. Would appreciate anyone's help.