Introduction
Use this guide to replace the loud speaker in your bq Aquaris M5.
Tools
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            Insert the tip of an iFixit opening tool between the back cover and the mid frame of the phone. 
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            Slide the opening tool to the bottom of the phone, to snap out the plastic clips, connecting the back cover and mid frame. 
 
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            Slide the opening tool back to the top of the phone, to disconnect all the clips on the edge. 
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            Slide around the corner and along the top edge, to also disconnect these clips. 
 
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            Grab the back cover by the loosened edge. 
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            Gently bend and twist the flexible back cover a bit to disconnect the remaining clips. 
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            Take off the back cover. 
 
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            Unscrew the ten black 4mm Phillips #00 Screws from the mainboard shield. 
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            Unscrew the golden 3.4mm Phillips #00 screw on the middle-right side of the mainboard shield. 
 
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            Insert the flat side of a spudger between the mainboard shield and the frame of the phone. 
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            Twist the spudger to lift up the mainboard shield. 
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            Remove the mainboard shield from the phone. 
 
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            Use a spudger to disconnect the battery's flex cable from the mainboard. 
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            Pull of the sticker on the bottom side of the battery. 
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            Grab the sticker and lift it up to take the battery out of the phone. 
 
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            Take out the seven 4mm Phillips #00 screws, holding the loud speaker unit to the mid frame of the phone. 
 
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            Insert the flat side of a spudger into the gap on the right side of the loud speaker. 
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            Lever the loud speaker up with the spudger. 
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            Grab the loud speaker and take it out of the phone. 
 
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To reassemble your device, follow these instructions in reverse order.