If Tung Ngern Is Used on Two Phones, Will Both Receive Payment Notifications at the Same Time?

If a merchant uses the Tung Ngern app on two phones, a common question is whether both devices will receive the incoming-payment notification at the same time when a customer pays. In actual operation, merchants should not automatically assume that both phones will receive identical notifications at exactly the same time simply because they are being used for the same merchant setup. It is useful to distinguish between “a payment being recorded for the merchant” and “how each phone receives a notification.” These are separate matters. Each phone has its own operating environment, including its system version, application settings, notification settings, power management, and internet connectivity. These differences can affect observable notification behavior. For example, after a payment occurs, one phone may display a notification before the other, or the notification behavior observed on the two devices may differ under some conditions. The behavior of one phone should therefore not be treated as proof that another phone will always behave identically. If a merchant wants to understand how Tung Ngern behaves with their particular setup, a practical approach is to test both actual devices. Keep both phones ready for normal operation, perform a small payment test, and then check each phone separately: whether the payment appears in the application, whether a notification is received, and how closely the notification timing matches between the two devices. It is also useful to test more than one transaction. A single payment may not be sufficient to establish how the devices behave during normal daily operation. If the two phones behave differently, compare relevant conditions such as Android version, app version, notification permissions, related device settings, and internet connectivity. This becomes particularly important when Tung Ngern notifications are used with Connect Hub Merchant Manager and a QR Box. The system works with notifications received by the configured device. If a particular phone is intended to form part of the payment-notification setup, merchants should verify that the phone itself receives Tung Ngern notifications as expected. The practical answer is therefore not to assume that “using Tung Ngern on two phones means both must always notify simultaneously.” Each phone should instead be treated as an individual notification endpoint whose behavior needs to be verified under the merchant's actual operating conditions. If notification behavior differs between the two phones, this does not automatically mean that there is a problem with the payment itself. The payment record and the phone notification behavior should be checked separately to identify where the difference occurs. Customer payments continue to go directly to the merchant's bank account. Connect Hub uses supported merchant-app notification information to help merchants recognize payment events and operate the configured notification system.