Why can t the SIM card send text messages and receive messages

If your phone can't receive SMS and MMS, it says that the memory is insufficient, we recommend you to clean up your phone's memory as follows:

1.Clear the read call records and text messages in time.

2.Clear your phone's Internet history: Browser - Menu key - Settings - Privacy & Security (Privacy) - Clear cache, Clear history, etc.

3.Move multi** files to an external SD card. Operation:

1).For Android: My Files - All Files - SDCARD0 - Find the folder you want to move - Press and hold - Move to - Return to external SD - Click"Move here"。

2).If you are on Android or above: Applications-My Files-All Files-Device Storage-Find the folder you want to move and open it-Menu key-Select All-Click the three horizontal bar icons-Move, return to the parent directory, click SD Memory Card-Select the relevant folder (or create a new folder)-Move here.

Note: For Android and previous versions (some Android systems do not support internal hard disks), many ** files are stored in the external SD card by default.

5.Uninstall third-party software that you don't use often.

If your phone can't send text messages, you can try to test it back on or change your phone, and check if there are any of the following:

1.If the SMS number is set incorrectly, please re-enter the correct SMS number.

2.No signal or low phone battery;

3.If the system is busy during peak SMS sending periods during holidays, we recommend that you try again later or avoid peak sending periods.

4.The format of the sending is incorrect. If you send a text message to a PHS user, you need to add the area code before the number;

5.The SMS was sent for more than 24 hours;

6.The phone has blocked the SMS sending function;

7.Being blacklisted for SMS;

8.insufficient balance of numbers;

9.The SMS inbox and sending box are full.

If the above reasons still cannot be solved, you can contact the local customer service or go to the business hall to confirm whether to activate the SMS function, and hand it over to the staff to deal with.

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The reasons why your phone can't send SMS messages are as follows:

1. The SMS center number is set incorrectly, please reset the correct SMS center number.

2. If there is no signal or the signal is relatively poor, you can go to a place with a strong signal for testing.

4. The other party blacks out his mobile phone number, and can only wait for the other party to pull him out of the blacklist.

5. If the SMS sending function is turned off on the mobile phone, you can turn on the SMS function and try again.

6. If you are included in the SMS blacklist, you need to go to the business hall to remove the blacklist status before you can use it normally.

7. If there is illegal content in the sent message and it is blocked, you can resend it again with another statement or phrase.

8. The temporary maintenance of the SMS** channel is suspended or closed.

9. There is a problem with the SMS platform's own system. Hugh.

Precautions for the use of mobile phone cards:

1. Do not bend, squeeze or scratch the mobile phone card with other sharp objects when using.

2. Avoid the metal contact surface being corroded by sweat stains, and do not take the mobile phone card out of the mobile phone at will.

3. The mobile phone card is a smart card, it has a card password, and the initial password is "1234", which can be modified by the user. When the pin1 code is entered incorrectly 3 times, the mobile phone card will be automatically locked, you need to enter puk1 to unlock, a total of 10 unlocking opportunities, puk1 code input wrong 10 times, the mobile phone will automatically start the self-destruct program, you need to bring the original valid documents to the business hall of the place of origin to replace the card. <>

1. Mobile phone arrears: this is the most basic problem, now mobile phones will generally be rated credit rating, if the credit rating is high, the amount of arrears will be larger, and the credit rating is linked according to the timeliness of their own payment;

2. Consult with the operator: call your mobile phone network operation business desk such as 10086, China Telecom 10000, Unicom 10010, etc. to transfer to manual services, explain your situation, and they will deal with it in a while;

3. The mobile phone storage is full and you can miss the game: This situation is generally more common in non-smart phones, at this time, you need to delete some text messages or other things that occupy memory;

4. Bad signal: It may be that the signal in your location is not good, such as on the subway or train, or it may be that the signal is not good due to the problem of your mobile phone, and you can't receive text messages without signal;

5. SIM card: It is possible that the mobile phone card is not recognized because the SIM card is not inserted properly.

If you are using an OPPO mobile phone, you can confirm whether you can receive SMS first;

1. You can receive SMS or verification code normally;

1. Confirm whether you have handled the number porting service recently, if you have just handled the network porting service, it is recommended to wait for the operator to activate the SMS function, and try it after a while.

2. Confirm whether the SMS center number is filled in correctly, it is recommended to contact the operator to confirm whether the information center number of the mobile phone is correct, if it is incorrect, you need to correct it in the SMS settings of the mobile phone, try to restart or switch on the airplane mode to re-search the network, and see if it can return to normal;

3. If the content of the SMS contains special characters or some illegal content, it may be intercepted by the server after sending the SMS and cannot be sent successfully.

2. Unable to receive SMS or verification code normally;

1. Confirm whether there is a problem in a fixed environment, if so, it is not excluded that some places are affected by the environment, and there is a poor signal or network congestion that causes the inability to send text messages, it is recommended to try to leave this area for a distance, and then restart the mobile phone or switch on and off the airplane mode to see if the problem can be solved;

2. If this is the case in all environments, please change the machine and change the card for comparison test, if it is determined that it is a card problem, it is recommended that you contact the operator to deal with it; If you have a problem with your phone, please bring your purchase invoice, warranty card and mobile phone to the nearest OPPO customer service center for testing and processing by professional engineers. Before you go, please back up and migrate your mobile phone data in advance (the data of the safe and QQ WeChat need to be backed up and migrated separately), and before going to the service center, please contact the staff of the service center in advance to confirm after-sales matters.

Hello, 1. If you mean that the mobile phone cannot send short messages, you can try to turn it back on or change the mobile phone for testing, and check whether there are any of the following conditions:

1) The SMS center number is set incorrectly, please re-enter the correct SMS center number;

2) No signal or low battery of the phone;

3) The mobile phone has blocked the SMS sending function;

4) Being blacklisted for SMS;

5) The balance of the number is insufficient.

2. If the problem cannot be solved after self-service troubleshooting, it is recommended that you contact the manual customer service of the home location to assist in verification and processing.

Hello, I am helping you to inquire about the relevant information, and I will reply to you immediately.

1.You can change your mobile phone to see if you can send and receive text messages; 2. If you can send and receive text messages, it is recommended that you insert the card into your mobile phone again and send a text message to yourself to see if you can receive it; 3. If not, it is recommended that you check whether there is a problem with the SIM card; 4. Check whether the SMS center number is set correctly; 5. Bring the mobile phone card to the local business hall to test or replace the mobile phone card.

I hope mine is helpful to you.