diff --git a/modules/ppcp-wc-gateway/src/Gateway/PayUponInvoice/PayUponInvoiceGateway.php b/modules/ppcp-wc-gateway/src/Gateway/PayUponInvoice/PayUponInvoiceGateway.php
index 4596bd321..68d4a19a7 100644
--- a/modules/ppcp-wc-gateway/src/Gateway/PayUponInvoice/PayUponInvoiceGateway.php
+++ b/modules/ppcp-wc-gateway/src/Gateway/PayUponInvoice/PayUponInvoiceGateway.php
@@ -215,6 +215,12 @@ class PayUponInvoiceGateway extends WC_Payment_Gateway {
 			}
 		}
 
+		$phone_number = filter_input( INPUT_POST, 'billing_phone', FILTER_SANITIZE_STRING ) ?? '';
+		if ( $phone_number ) {
+			$wc_order->set_billing_phone( $phone_number );
+			$wc_order->save();
+		}
+
 		$wc_order->update_status( 'on-hold', __( 'Awaiting Pay upon Invoice payment.', 'woocommerce-paypal-payments' ) );
 		$purchase_unit  = $this->purchase_unit_factory->from_wc_order( $wc_order );
 		$payment_source = $this->payment_source_factory->from_wc_order( $wc_order, $birth_date );