My SIM Card Cannot Be Detected on my OPPO A54

The tiny chip inside your OPPO A54 that lets you send a message and receive or make calls is called a SIM card. Your SIM card can also connect you to the internet and be online when Wi-Fi is not available. However, there are instances that your SIM card won't detect or prompts "Invalid SIM" or "No SIM Card Inserted" on your OPPO A54. That's why we created the steps below for you to follow in case this happened to you. Read on!

Applicable to: OPPO A54.

SIM Card cannot detect on OPPO A54.

1. Restart your OPPO A54. 

• To restart: Press and hold the [Power] button and the [Volume Up] button simultaneously for at least eight (8) seconds or until you see the OPPO logo.

2. Check your SIM card.

One of the reasons why this occurs to you is either your SIM card is damaged or disabled. 

You need to turn off your OPPO A54 and remove your SIM card using the ejector tool and check if your SIM fits right into the slot or if broken. 

3. Clean your SIM slot.

The SIM slot can get dusty too. If you see any dirt or dust, gently wipe it off or use compressed air to remove it. 

4. Use another SIM card.

If you have an extra SIM card with you, try to insert it into the slot and see if it works. If it worked, it implies that the old SIM  you're using is faulty. However, if it did not work, the fault is in the software of your phone. 

5. Turn on Airplane Mode.

There are two ways on how you can turn on the Airplane Mode.

• Through the control center: Swipe down the [Control center] from the top and tap [Airplane mode]. 

• Through settings: Go to [Settings] > toggle [Airplane mode]. 

After turning it on, wait at least 30 seconds and turn off the Airplane mode.

6. Enable your SIM card.

• To enable your SIM card: On your home screen, go to [Tools] > [Phone Manager] > [Clean Up Storage].

7. Clear the storage cache. 

• To clear the cache: Go to [Settings] > [App management] > [App list] > [SIM Card Apps] > [Storage usage] > [Clear data] > [Clear cache].

8. Reset your OPPO A54.

• To reset: Go to [Settings] > [Additional settings] > [Back up and reset] > [Erase all data (factory reset)] and tap [Reset system settings only].

Note: Resetting your OPPO A54 to system settings will not delete any of your files. This will only reset the phone to its original system settings. 

Did it work? If it did not work, we advise you to go to your nearest OPPO Customer Service Center along with your proof of purchase, warranty card, and phone for further assistance. 

*Pictures, settings, and paths might differ from those of your phone, but these won't affect the description in this article.