so i got it fixed. i knew the screen is good but probably conflict within two programs. i did hard restart several time no help. called apple and they said screen is bad and take it to best buy. so i decided to give a last try.
hold down up volume or down volume key WITH HOLDING POWER BUTTON, when it goes to power off, medical id and sos screen just
keep pushing any button until you see a window from bottom pop up, cancel , voice over and one other thing. just leave the device like this and let the battery drained, once the battery drained wait couple of hours and charge it through the computer port. i tried this with the wall charger and did not work.
i think issue was me unlocking with face id and same time attempted to unlock by sliding the bar up to unlock with the pass-code. no patience!!
moral of the story is, human is faster then technology.
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