What is the reason for the failure of setting the number of SMS center?

Unable to set the number of SMS centers is usually caused by the following common reasons:

1.** Input error: * * One of the most common reasons is that the user entered the wrong SMS center number. The number of the SMS center should be correct, otherwise the SMS cannot be sent successfully. Please check the number again.

2.** Network problem: * * If your mobile phone is in an area with no network or unstable signal, you may not be able to set the SMS center number successfully. Try to reset in a good place.

3.**SIM card problem: * * Sometimes, the SIM card may be damaged or does not support the setting of SMS center number. You can try to insert the SIM card into another mobile phone, or insert another SIM card into the mobile phone to determine whether the problem is related to the SIM card.

4.** Mobile phone setting problem: * * Some mobile phones may have software or firmware problems, which makes it impossible to set the SMS center number successfully. In this case, you can try to update the operating system of the mobile phone or contact the customer service of the mobile phone manufacturer.

5.** Operator's problem: * * Sometimes, the network problem or technical failure of the operator may cause the number setting of the SMS center to fail. If you suspect that it is the operator's problem, you can contact their customer service for help.

6.** Account problem: * * If there is something wrong with your mobile phone account, it may affect the number setting of the SMS center. Make sure that your mobile phone account is normal, there is no arrears and no downtime.

If you still can't solve the problem after trying the above methods, it is recommended to contact the customer support of your mobile phone operator or mobile phone manufacturer, who can provide more detailed help and guidance to solve the problem of failed number setting in SMS center.