What will happen when we change parts iPhone 12 Pro Max..?

This video i want show you ,what happen when we change spare part iPhone 12 Pro max.it error Face ID, True Tone ,Battery Health,and Portrait Front Camera..
Link subcribe : https://youtube.com/channel/UCTl0Ma_E...
-Galaxy Note 20 Ultra Teardow:https://youtu.be/rHMOm_3whOM
-ROG Phone III Teardown:https://youtu.be/GwX97YgUCGU
-Restoration Galaxy Note9,S9Plus:https://youtu.be/32s21Wzr_BQ
- iPhone 7plus 24K : https://youtu.be/SYdXzF7Dcdg
-Galaxy fold Restore : https://youtu.be/wAc2CgmAi0I
-Pixel 2XL screen replace : https://youtu.be/vOuc9hfJegk
-iPhone XS MAX :https://youtu.be/GPffmE14nWM
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