My OPPO memory card can t read

Hello, 1. Is it normal to use an SD card before? Or is it just after a shutdown and reboot? 2. You can enter the official website**firmware package, and then flash the system to the mobile phone to see if there will be improvement. Attached is a link to the firmware package of each model (select the model).

Operation steps: Back up the data first, then copy the firmware package to the root directory of the phone's storage, shut down, press and hold the power button and the volume down button at the same time to enter the engineering mode in the shutdown state, clear the data and cache, manually select the installation file, and restart the phone. 3. You take out the SD card and wipe it before re-inserting it, or replace the SD card to test whether it is a problem with the SD card.

If you have any other questions, you can enter the OPPO enterprise platform to ask customer service questions!

Hello, this situation may be that the memory card is not compatible, or the water card is recommended to try a different line card memory card.

Hope mine is helpful to you.

If your phone doesn't recognize the SIM card, you can try the following methods:

1. Turn on the airplane mode of the mobile phone and then turn it off to see if the SIM card can be recognized.

2. Reinstall the SIM card to ensure that the SIM card is in good contact with the mobile phone.

3. Go to Settings > Mobile Network) SIM Card & Traffic Management > Select a SIM card > Network Settings > Enable 5G and turn on the Smart 5G switch.

4. It is recommended that you restart your phone to try.

5. If you are using dual SIM, please turn on the turned off SIM card switch in the SIM card management of your mobile phone.

6. If conditions permit, please change other SIM cards to your mobile phone for comparison test.

8. Cropping the SIM card by yourself may cause damage to the SIM card, it is recommended that you go to the local operator to use a professional tool to cut the SIM card.

If the above methods cannot solve the problem, it is recommended that you back up your mobile phone information, and then send your mobile phone invoice, warranty card and mobile phone to the nearest local OPPO customer service center for testing and solution.

There are basically 3 reasons why the memory card phone can't be read:

1. There is a problem with the original memory card slot and reed, and the contact is poor, so that the data of the memory card cannot be imported into the device for storage.

If you encounter poor contact, this is a good problem to solve, just take out the card, use the eraser to wipe the gold finger of the memory card, remove the oxide layer on it, and then put it in the phone to try.

2. The memory card is broken, the quality is problematic, the compatibility is not good, and it is not suitable for your mobile phone system.

If the computer can read the card, it means that the card is fine, there may be a problem with the mobile phone card slot, and then find a normal card to insert and try, if other cards can not be read, it is the mobile phone card slot is broken, please repair it.

3. The mobile phone is damaged, the relevant circuits and functions are damaged, and the module is lost.

Generally, it is not good to fix the problem that the memory card cannot be formatted due to poisoning. If it is a virus that causes the mobile phone memory card to not be read, you need to format the memory card.

If your phone doesn't recognize the SIM card, you can try the following methods:

1. Turn on the airplane mode of the mobile phone and then turn it off to see if the SIM card can be recognized.

2. Go to Settings > Mobile Network (SIM Card & Traffic Management) > select a SIM card and click the "Enable" switch.

3. Go to Settings > Mobile Network (SIM Card & Traffic Management) > select a SIM card > enable 5G.

4. When conditions permit, please change other SIM cards to your mobile phone for comparative testing, if his SIM card is normal, it may be a problem with your SIM card itself, it is recommended that you go to the operator's business hall to change the SIM card.

5. If the existing mobile phone can't recognize other SIM cards, but other mobile phones can. After backing up your phone's important data, you can check whether it is restored through Settings > Other settings (system settings) > Backup & Reset > Reset phone > Restore system settings only. If you haven't recovered yet, you can choose to"Erase all data completely"Try.

Caution is advised).

If the above methods cannot solve the problem, it is recommended that you back up your mobile phone information, and then send your mobile phone invoice, warranty card and mobile phone to the nearest local OPPO official service center for testing and solution.

1. Before installing the SIM card of the mobile phone, you need to turn off the mobile phone.

2. The SIM card tray is generally located at the bottom or left and right sides of the mobile phone, it is recommended that you use the mobile phone's own card pin, insert the card tray hole vertically, and poke out the card tray slightly hard to remove it.

3. After removing the card tray, you can put in the SIM card (or SD card) according to the card slot type, confirm that the SIM card is installed correctly, insert the mobile phone and turn on the phone to check whether the mobile phone reads the card normally.

If the size of your SIM card does not fit the tray, it is recommended that you go to the nearest OPPO customer service center or operator network (Mobile, China Telecom, China Unicom) to crop it.

OPPO mobile phone SIM card can not be read, it may be a SIM card, because of bending or the temperature is too high and the chip is wrong, you can put the SIM card in other mobile phones to take a look, if it still can't be read, then it is a problem with the SIM card, if other mobile phones can read out, then it is a problem with the mobile phone.

It may be that there is a problem with identification, but the current mobile phones are dual SIM dual standby It is not possible to change one card slot, and the other card slot is good.

If you are using an OPPO mobile phone (ColorOS system) and the SIM card is not recognized, it is recommended to troubleshoot as follows:

1. Turn on the airplane mode of the mobile phone and then turn it off to see if the SIM card can be recognized.

2. Please take out the SIM card and check whether the SIM card is damaged or whether the card is inserted in the correct direction; At the same time, observe whether there are stains on the metal surface, if so, please clean off the surface stains first;

3. Please check whether the SIM card can be used on other mobile phones, if you find that the mobile phone can not recognize other SIM cards, but other mobile phones can, you can back up the important information of the mobile phone, through Settings > System Settings > Reset the mobile phone > Restore all settings to check whether it is restored, if it still cannot be restored, you can choose"Completely erase all data of the Dead Brigade"Try (it is recommended to back up your data in advance and operate with caution);

5. When the single SIM card is not recognized, please confirm whether the single SIM is turned off, go to Settings > Mobile Network (SIM Card and Traffic Management) > select a SIM card and click the "Enable" switch;

6. Go to Settings > Mobile Network (SIM Card & Data Management) > select a SIM card > Enable 5G attempt;

7. You can also contact the operator's customer service to check whether the SIM card is in arrears.

If none of the above methods can solve your problem, it is recommended that you back up your mobile phone information, bring your mobile phone invoice, warranty card and mobile phone to the OPPO official service center for testing, or choose the two-way free shipping repair service to send your mobile phone to the designated service.