Introduction
Use this guide to remove or replace the rear glass in the Xiaomi Mi 9.
You’ll need replacement adhesive to reattach components when reassembling the device.
Tools
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            Before you begin, switch off your phone. 
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            Apply a heated iOpener to the rear glass to loosen the adhesive beneath the edges. Apply the iOpener for at least two minutes. 
 
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            Secure a suction handle to the lower edge of the rear glass, as close to the edge as possible. 
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            Lift the rear glass with the suction handle to create a gap between the glass and the frame. 
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            Insert an opening pick into the gap. 
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            Slide the opening pick to the bottom right corner of the phone. 
 
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            Insert a second opening pick and slide it to the bottom left corner to cut the adhesive. 
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            Leave the opening picks in place to prevent the adhesive from resealing. 
 
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            Insert a third opening pick at the bottom left corner. 
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            Start to slide the opening pick from the bottom left corner along the side of the Xiaomi Mi 9 to cut the adhesive. 
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            Leave the opening pick in the top left corner to prevent the adhesive from resealing. 
 
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            Insert a fourth opening pick under the top left corner of the rear glass. 
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            Slide the opening pick along the top to cut the adhesive. 
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            Leave the opening pick in the top right corner to prevent the adhesive from resealing. 
 
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            Insert a fifth opening pick at the top right corner of the phone. 
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            Slide the opening pick along the right edge to cut the remaining adhesive. 
 
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Secure the new back cover with pre-cut adhesive or double-sided adhesive tape.
To reassemble your device, follow these instructions in reverse order.
After installing the rear glass, apply pressure for several minutes to help the adhesive form a good bond, such as by placing it under a stack of heavy books.
Repair didn’t go as planned? Check out our Answers Community for troubleshooting help.