Details

How to Use a GCash QR Voucher:

1. Open the GCash app and tap PAY QR to open camera

2. Scan the promo QR to get QR voucher

3. Tap "Use QR Voucher" to open camera

4. Scan the merchant's payment QR to pay, input the full amount

5. Tap "CONFIRM" to finish payment.

* GCash - Scan Your Way to Discounts with QR Voucher

https://www.gcash.com/how-to-use-a-gcash-qr-voucher/