GH97-29493A: the Galaxy S24 NFC antenna

On the Samsung Galaxy S24, the NFC antenna handles near-field communication: contactless payment, quick pairing of an accessory, file sharing by simply touching two devices together. It carries the manufacturer reference GH97-29493A, the one fitted at the factory on this specific model.

Once this antenna fails, only these functions disappear: the rest of the phone continues to work normally, which helps isolate the problem before servicing.

Contactless payment no longer responding

The most common sign is a repeated failure of payment via virtual card or Samsung Pay, even though the balance and network connection are not at fault. Quick pairing (Quick Share, connected watch, earbuds) can also become erratic or stop triggering altogether.

These symptoms remain isolated to the NFC function: calls, Wi-Fi and GPS continue to work. Replacing the antenna is then the most direct lead, without needing to suspect the entire motherboard.

Service Pack: a genuine Samsung part

This antenna is a genuine manufacturer part, supplied as a Service Pack: it comes from the official Samsung supply chain, in its repair packaging, with no component replaced or reworked. The reference GH97-29493A allows you to check, before ordering, that this is indeed the part fitted at the factory on this model, and not a compatible antenna made by a third party.

S921B, the only reference concerned

This NFC antenna is intended exclusively for the Galaxy S24 referenced S921B. Before ordering, check this reference on the label under the SIM tray or in the phone's settings, to make sure it matches the device to be repaired.

Where this antenna is located, and how to replace it

The NFC antenna is located under the back cover, near the charging coil. Replacing it requires opening the chassis carefully so as not to damage the neighboring flex cables, then fitting a new adhesive to hold the part in place once reassembly is complete.