NFC Review Card Not Working? How to Find and Fix the Cause

An NFC review card that is not working is almost always one of five problems: the phone cannot read NFC or has it switched off, the card is held in the wrong spot, a case or metal surface is blocking the signal, the chip is blank, locked or damaged, or the link written to it is wrong. Work through them in that order and you will find the cause in a couple of minutes.

Look at what happens when you tap. Nothing at all points to the phone, the position or something blocking the signal. A notification that opens the wrong page points to the link. An empty-tag message points to the chip.

Check the phone before you blame the card. On iPhone, Apple's developer documentation states that iPhone XS and later support background tag reading, which means the phone scans for tags whenever it is in use and shows a pop-up notification without any app open. Apple's support guide lists iPhone 7, 7 Plus, 8, 8 Plus and X as models where the user has to turn on the NFC Tag Reader control in Control Center first. Anything older than iPhone 7 cannot read tags.

On Android, NFC is a setting that can be switched off. Google's own help page for Pixel phones puts it under Settings, Connected devices, Connection preferences, NFC, with a Use NFC toggle, and adds that if you do not see the NFC setting, the phone does not have NFC. Other manufacturers use different menus, so searching the Settings app for NFC is the quickest way to find the toggle.

Because Apple deliberately pauses background reading in several situations. According to Apple's Core NFC documentation, background tag reading only happens while the iPhone is in use, and it is unavailable even with the display on when the device has never been unlocked since it restarted, when another NFC reader session is running, when Apple Pay Wallet is in use, when the camera is open, or when Airplane Mode is on.

None of these are faults with the card. Tell staff to ask the customer to close the camera, finish paying, then tap with the phone unlocked.

Usually because NFC is off, the screen is locked, or the phone showed a notification that nobody noticed. Google's Android developer documentation says Android devices are usually looking for NFC tags when the screen is unlocked, unless NFC has been disabled in Settings.

Recent Android versions have also changed what a tap looks like. The same documentation states that starting in Android 16, scanning a tag that stores an http or https link triggers a standard view intent, and that beginning with Android 17 the phone surfaces an open-link notification that requires the user to tap it before the link opens. On the newest phones a card that seems to do nothing may simply have posted a notification. Pull down the shade and look.

The phone's NFC antenna is small and in a fixed place, so where you touch the card matters. On iPhones it sits at the top edge near the cameras; on most Android phones it is in the upper or middle part of the back. A card pressed against the bottom of either phone will not be read.

Pressing harder does not help; moving does. NXP, which makes the NTAG chips used in most review cards, rates the operating distance at up to 100 mm depending on field strength and antenna geometry, but in practice a phone needs to be within a few centimeters and well aligned with the card's antenna. Slide the phone across the card rather than jabbing one spot. On a stand or plaque, the chip is usually behind the printed tap icon.

Metal is the main enemy of NFC. A card placed directly on a stainless steel counter, a metal till or a fridge door often will not read at all, because the metal detunes the small antenna in the card. On the phone side, a metal or wallet-style case, a magnetic mount plate or a thick rugged case shortens the working distance, sometimes to zero.

If two different phones fail with the card in free air, suspect the chip. Either the card was never programmed, so the phone reports an empty tag; it was programmed and then locked with a typo in the link, which cannot be undone; or the chip or its antenna has been damaged by bending, cutting or a hole punch.

NTAG chips are robust in normal use. NXP rates them for ten years of data retention and 100,000 write cycles, so a card does not wear out from customers tapping it; reading is not writing. What kills a card is damage to the hair-thin antenna coil around the edge of the chip.

A free NFC reading app, such as NFC Tools on Android or iOS, tells you which you have. If it shows a URL record, the chip is fine and the problem is the link. If it reports an empty tag, write the link following our guide to programming an NFC tag with your review link. If it detects no tag on two phones, the card needs replacing. NXP's chips also support a permanent read-only lock and a 32-bit password; a card that reports itself as read-only when you try to rewrite it has been locked, and the only fix is a new card.

When the tap works but the wrong thing opens, the link is the problem. Common mistakes are a business name typed in front of the URL, https:// pasted twice, a link copied from a search results page rather than the review form, or a Place ID for a duplicate listing. Read the card with an NFC app, copy the URL it shows, and open it in a private browser window.

What should open is Google's review form for your business, with the correct name and address at the top. Google's Business Profile Help confirms that customers must be signed in to a Google Account to leave a review, so a sign-in prompt before the form is normal and not a fault. If it opens a map, a search page or another business, copy the correct link again using our guide to finding your Google review link and rewrite the card. If the link went through a third-party shortener that has expired, every card using it is dead until rewritten.

Then the fix is presentation, not hardware. Customers do not know where their phone's antenna is, do not expect a notification, and often tap with the camera open because they assumed it was a QR code. A card with both an NFC chip and a printed QR code removes most of these conversations. Our comparison of NFC and QR review cards explains why having both on one item matters.

A pre-programmed Google Review Card arrives with the chip already written with your review link, an optional printed QR code as the fallback, a one-off price with no subscription, and tracked delivery, so the programming mistakes above are taken care of before it reaches the counter. Whatever card you use, give staff a one-line script: unlock your phone, hold the top of it on the card, tap the banner. Keep the card on a stand or a non-metal spot by the till, and test it on an iPhone and an Android phone once a week.

The rules do not change because the request comes from a tap. Ask every customer the same way, never offer anything in exchange for a review, and let customers choose their own rating. Google's Business Profile Help states that offering incentives for reviews is prohibited. Our Google review policy guide and the rest of the NFC review products hub cover the details.