This video shows you how to repair the broken iPhone XS Max Screen and its Ear Speaker. Get The OEM Screen Replacement For iPhone XS Max :
Step 26. The earpiece speaker is lightly adhered in place. Using a spudger, gently pry under the top edge of the speaker assembly, and flip it over—down and away from the top edge of the display. The speaker remains attached via a very thin flex cable. Be careful not to strain or damage the cable. Add a comment.
To your other question, yes the flexes are quite sensitive to tears so take a closer look to see if this is a problem. However, if multiple replacement screens no longer work, then consider this to be a logic board failure. An experienced micro-soldering tech may be able to help here.
Open the Camera app, then swipe to Cinematic mode. Tap the arrow in landscape mode to show these adjustment options: Tap the Depth Control button , then drag the slider to adjust the depth of field. Tap the 1x button to switch to Telephoto. Tap the button again (the button will now read 3x) to switch back to Wide.

Apple’s iPhone XS Max features a 6.5-inch display size, upgraded cameras, faster A12 Bionic chips, better displays, faster Face ID, and up to 512GB storage. It features a stunning state of the art design.

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iphone xs max display change