How to resolve the issue when the authentication code does not arrive on your smartphone

Services that utilize SMS verification frequently report issues where the verification code is not received. This problem is rarely caused by a single factor and is usually related to multiple reasons. By following the steps below, many cases can be resolved.

First, check your SMS reception environment

The first possible reason for not receiving the verification code may be an issue with your SMS inbox. If your inbox is full, you may not be able to receive new SMS messages. Start by clearing your inbox and deleting unnecessary messages.

Next, try restarting your smartphone. Restarting can reset temporary communication issues and stabilize the reception of signals from your mobile carrier. If the network signal is unstable, SMS messages containing verification codes may not be received properly. Switching from Wi-Fi to mobile network or trying different connection environments can also be effective.

Confirm device settings to restore verification code reception

It is important to check whether security software or apps installed on your smartphone are blocking SMS messages unknowingly. Open your security app settings and verify that SMS filtering features are not enabled.

When performing critical operations such as withdrawal requests, consider temporarily disabling security software or apps. This can increase the likelihood that SMS messages containing verification codes are received properly. After changing settings, be sure to re-enable security features.

Confirm with your carrier and hardware

Contact your mobile carrier to verify that your contract plan has not been suspended, put on hold, or blocked for any reason. Contract issues can prevent new SMS messages from being received. Confirming with customer support can help rule out account-related problems.

If you are using a dual SIM smartphone, try inserting the SIM card into a different slot. Also, inserting the SIM card into another smartphone to see if the verification code can be received is effective. This step helps identify whether the problem lies with the SIM card itself or with a specific device.

If the verification code still does not arrive

If you have tried all of the above steps and the issue persists, please contact こちらのフォーム support team. Providing detailed information about your situation will allow us to offer more specific solutions.