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Repair and disassembly information for Samsung's flagship S20+ Android smartphone, released in March of 2020.

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No network after screen replacement

Replaced the screen/frame on an AT&T S20 Plus, transferred over all parts including front camera, charging daughterboard, 5G antennas, etc. After sealing it back up, it’s not detecting the cellular network. Fearing a bad part, I put it back in the original screen/frame and same thing. All connectors look fine, pressure pins on the charging port are in good condition, too. Anyone have any ideas? Thanks in advance!

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Check that the orange? plastic antenna band is securely connected.

Here’s the Ifixit Samsung Galaxy S20 Plus Back Cover Replacement guide.

The antenna is seen in the image below and also in the top image and better in the images in Steps.15 & 16 of the guide.

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