Smart Jewelry
Troubleshooting

The most common reason is antenna position. iPhone's NFC antenna is located at the very top edge of the phone — not the center or back. Most people instinctively tap the middle of the phone and nothing happens.

Hold your iPhone so the top edge (near the camera) hovers directly over the charm on the bracelet. Keep the phone flat and parallel to the charm, then hold still for 1–2 seconds.

iPhone's background NFC scanning can sometimes get stuck, especially if the screen was just woken up or if Apple Pay was recently used. Try these steps:

1. Lock your phone fully, then unlock it again.
2. Tap the top edge of the phone to the charm within 2 seconds of unlocking.
3. Make sure you're not in an area with heavy wireless interference (like near a router or another NFC device).

No app needed. iPhones running iOS 13 or later support background NFC scanning natively. When you tap correctly, your profile link will open automatically in Safari — no downloads required.

If your iPhone is older than an XS running iOS 12 or below, background NFC is not supported and reading won't work without a third-party NFC app.

This happens when the phone detects a payment terminal frequency — but a Coastify bracelet chip shouldn't trigger this. If it does, it usually means you're double-tapping the side button accidentally while bringing the phone close.

Try holding the phone with one hand, keeping your fingers away from the side buttons, and tapping the top edge gently to the charm.

For most Android phones, the NFC antenna is located in the center of the back. Hold the phone flat with the back center hovering directly over the bracelet charm. Keep it parallel — not at an angle — and hold still for 1–2 seconds.

Some Samsung models (especially older ones) have the antenna slightly higher or lower. If the center doesn't work, try shifting the phone up or down slightly while keeping it flat.

Confirm NFC is enabled: Settings → Connections → NFC and Contactless Payments (varies by brand). Toggle it off and back on to reset it.

Also check that "Read/Write" mode is enabled if you see that option — some Android skins separate payment NFC from tag reading.

The smart chip is sealed inside the resin and is passive — it has no battery and no moving parts, so it is highly resistant to daily wear. Brief water exposure (hand washing, light rain) is generally fine.

However, avoid prolonged submersion (swimming, showering) and harsh chemicals like bleach or acetone, which can affect the resin encasing the chip rather than the chip itself.

Yes — if you need your bracelet updated to a new link (for example, if you switch digital profile platforms or change your URL), simply contact us at coastify.org and we'll walk you through the update process.

The chip itself has no expiration date and no battery — it's powered by the phone's field each time someone taps, so it will not wear out from use. It is rated for over 100,000 read cycles.

The only thing that could stop it working is physical damage to the chip's internal antenna — which would require significant force or crushing of the charm itself.

The chip only stores a URL link — nothing personal like your address or phone number is stored on the bracelet itself. That information lives on your profile page, which you fully control.

Passive reading requires a phone to be within 1–4 cm of the charm, so accidental reads from a distance are not possible. The chip cannot track you, broadcast, or transmit on its own.

This usually means the profile link your bracelet points to is no longer active. Common causes:

• Your digital profile account was paused or deleted.
• You changed your username or profile URL on the platform.
• Your profile is set to private or has been temporarily hidden.

Log into your digital profile platform and confirm your profile is active and publicly accessible. If the link has changed, contact us at coastify.org to update the chip.

Absolutely. Your bracelet opens your digital profile page — and you control everything on that page. You can add or remove your Instagram, LinkedIn, website, phone number, email, and more at any time directly through your profile platform account.

No need to touch the bracelet — just update your profile online and the changes take effect immediately for anyone who taps.

Make sure your digital profile has a "Save Contact" or "Add to Contacts" button enabled — this is usually a setting inside your profile platform dashboard. When enabled, anyone who taps your bracelet can save you as a contact in one tap.

Also confirm you've filled in your name, email, and phone number on your profile — those fields need to be present to generate a complete contact card.

Three types of cases commonly block or weaken the signal:

• Cases with a built-in metal plate (used for magnetic mounts).
• Wallet cases with multiple cards stacked inside.
• Very thick or heavily armored cases (3mm+).

Try removing the case temporarily to test. If it reads without the case, the case is the issue. Slim cases with no metal components generally work fine.

Before assuming a defect, please try the following checklist:

✓ iPhone: top edge of phone to charm, flat, hold 2 sec.
✓ Android: center back of phone to charm, flat, hold 2 sec.
✓ NFC is enabled in phone settings.
✓ No metal plate or thick case on the phone.
✓ Try a different phone to rule out a device issue.

If none of these work, please reach out through coastify.org — every Coastify bracelet is tested before shipping, but we're happy to make it right if something isn't working.

Not simultaneously — the chip responds to one phone at a time. But there's no limit on how many people can tap it overall. Each person taps one at a time and gets your profile instantly. It's designed for exactly this — passing your bracelet around at events.