The most common reason a payment doesn't go through is a mismatch between the billing address on your card and what's stored in Wallet. Open the Wallet app, tap your card, go to the card details, and verify the billing info matches your bank records exactly. Also check that your card hasn't expired and your bank hasn't flagged the transaction as suspicious.
If you're stuck on the 'Card Not Added' error, try these steps:
When biometric authentication fails mid-transaction, the issue is usually a dirty sensor or a recent iOS update that reset permissions. Go to Settings → Face ID & Passcode, make sure 'Apple Pay' is toggled on. Re-enroll your face or fingerprint if needed. A quick device restart also clears most authentication glitches.
Sometimes a payment appears to fail but the charge still posts. This isn't an Apple Pay bug — it's a bank authorization hold. Wait 24–72 hours; most holds release automatically. If the charge sticks, contact your bank directly with the transaction timestamp.
If the terminal isn't picking up the signal:
A frozen Wallet app usually points to a corrupt cache or a stuck background process. Force-quit the app, wait 10 seconds, and reopen. If it keeps crashing, go to Settings → General → iPhone Storage, find Wallet, and offload it. Reinstalling resets the local data without removing your cards — they sync back from iCloud automatically.
If recent purchases aren't appearing in the transaction list, pull down to refresh the view. If nothing loads, check your internet connection — Wallet needs a stable connection to fetch activity. Switching from Wi-Fi to cellular (or vice versa) often fixes a stuck sync.