Repair guide Galaxy S21 (SM-G991B) - English - Rev.1.0

Table of Contents

43 Under-display Camera Calibration (Fold Models Only) 45 Digital Hall Sensor Calibration (Fold and Flip Models Only)

Exploded View and Parts List 48 Exploded View 49 Parts List

Disassembly and Assembly 50 Tools for Disassembly and Assembly 53 Fasteners (Adhesives and Materials) for Assembly 54 Disassembly for Back Cover, Display, and Charging Port Replacement 55 SIM Card Tray Remove 56 Button Remove 59 Back Cover Remove 69 Wireless Charging Module and Bottom Speaker Remove 73 Charging Port Remove 75 Main Board Remove 79 Front Camera Remove 81 Display Module 82 Reassembly for Back Cover, Display, and Charging Port Replacement 82 Preparing a New Display Module 84 Front Camera Assembly 86 Main Board Assembly 90 Charging Port Assembly 92 Wireless Charging Module and Bottom Speaker Assembly 95 Back Cover Assembly 98 Button Assembly 101 SIM Card Tray Assembly

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