Apple's 4S SMS can't be sent out. What happened?

IPhone can't send text messages The solution is as follows:

1. Whether the cell phone signal is normal.

2. Check whether the SIM card status is normal.

3. Check whether the send key is bright and clickable.

4. If you can't click Send after entering the text, the "Send" key is still gray. Please turn off "Show Subject Bar" in Settings > SMS >.

5. If it is a mass message and the numbers are entered manually, please make sure to separate each number with a line break instead of a space.

6. After the above problems are eliminated, you can first check whether the number of the SMS center is correct. If it is not correct, you can delete it first and then reset it. After the setting is completed, you can check whether the SMS center number is correct again.

The specific operation mode is as follows:

1. Inquire about the set SMS center number: dial *#5005*7672# with iPhone.

2. Delete SMS center number: dial ##5005*7672# with iPhone.

3. Set SMS center number: dial *5005*7672*+86 SMS center number # with iPhone.

The settings for sending MMS are as follows:

1. Open the settings of iPhone. Click General-Network-Cellular Data Network to enter the MMS settings.

2. One * * in the cellular data has two setting areas, the upper part is the setting of Internet parameters, and the lower part is the setting of MMS parameters. When using mobile, the general setting of Internet access parameters is only cmnet, and the iPhone does not support wap Internet access.

3. MMS parameter setting, for Unicom and telecom users, except for the different parameters, the operation mode is the same. (China Unicom: APN:uniwap or 3gwapMMSC: MMS agent:10.0.172; China Telecom: APN:ctwapMMSC: MMS agent: 10.0.0. 172)

4. Enable MMS settings in Settings-General-Information, which will take effect after restarting.