Use this guide to remove and replace the front camera assembly (a.k.a. selfie cam) in an iPhone 12 Pro Max.
If you're using a single suction handle, apply it to the bottom edge of the phone, while avoiding the very edge of the glass.
Use a hair dryer to heat the right edge of the iPhone (the edge with the power button) until the screen is slightly too hot to touch.
Use a hair dryer to heat the top edge of the iPhone until the screen is slightly too hot to touch.
Use a hair dryer to heat the left edge of the iPhone until the screen is slightly too hot to touch.
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