If you have had to remove the screen display assembly on your iPhone then the waterproof seal would have been broken.
It is highly recommended that you replace that seal with a new one when reassembling back your iPhone. This seal is to keep out water, dust and other contaminants that might damage the inside of your iPhone.
• 100% brand new & high quality.
• Compatible for iPhone 11 (Model number: A2111, A2112 & A2113).
1 x Waterproof display screen adhesive seal replacement for iPhone.