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Introduction
When removingThe fingerprint sensor scans your finger to unlock your device. This guide will come in handy if you are having difficulty unlocking your phone or getting it to read your fingerprint. Before you begin, check out our [https://www.ifixit.com/Wiki/Samsung_Galaxy_S9_Troubleshooting|troubleshooting page] to see if your issues are hardware problems.

If you remove
the fingerprint sensor, the waterproof seal is brokenwill break. If you reassemble your device without replacing the seals, your device will run normally, but will no longer have its waterproof capabilities.