How to fix an unrecognized sim card issue on Oppo A16

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How to fix an unrecognized sim card issue on Oppo A16?

Do you often see the sim card icon appear in the header of your phone? Are you unable to send or receive texts and phone calls ? It’s most likely that your Oppo A16 doesn’t recognize your sim card.

This can be a very inconvenient issue, especially if you use your smartphone on a daily basis.

That is why we decided to help you fix an unrecognized sim card issue on your Oppo A16.

Limit probable causes Oppo A16

First, we are going to summarize the most common factors of such an issue.


It is possible that you play games on your phone, but some high paced game application cause excess heat.

Our other articles on Oppo A16 can help you.

This can prevent your phone from functioning correctly.

To avoid such a situation, try to pause your game from time to time, let your phone rest in a cool spot, and shut down the apps and networks.

Finished subscription contract

Some phone companies don’t necessarily alert you when your subscription is about to end.

Yours may have ended without you knowing, making your sim card unrecognizable by your Oppo A16. Check your contract to see if it is the problem.

Misplacement, damaged sim card, or damaged phone

These are usually the cause of an unrecognized sim card on Oppo A16. First verify that your sim card is well-placed in your Oppo A16. Read your phone’s notice to know how to place it correctly.

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It is also possible that your phone or sim card has been damaged, either by falling or getting wet.

If so, use your warranty to replace your sim or your phone.

Clear the partition cache of your Oppo A16

The system cache partition stores temporary system data. It allows the system to access applications more quickly and efficiently, but sometimes it gets cluttered and outdated, and prevents your Oppo A16 from functioning correctly.

Do not worry, it will not lead to any loss of personal data or settings.

Here is how you can do it : first go to the “Settings” menu, then scroll down to “App manager” and tap on it.

Go to an app.

Eventually, select “Clear data, Clear cache”. It’s done !

Try new sim card

If the problem persists, it may be because your sim card is obsolete.

First, try your sim card in another phone.

If it doesn’t work you then have to contact your phone operator, so they send you a new one.

Be careful, you will maybe change numbers, if so, do not forget to warn your contacts.

Search for hardware issues

Some phone models may have a hardware issue.

To know if it’s the case of your Oppo A16, search online if Oppo A16 users have the same problem as you do. If so, go to your phone provider and use your warranty to get a new one.

If you do not have the time to do it immediately, there is an easy trick to fix the unrecognized sim card issue on your Oppo A16 : apply pressure on the sim card.

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To do so while using your phone, place a folded piece of paper on top of your sim card when inserting it.

It will help you keep using your phone until you go and replace it.

To conclude

Through this article, we have explained to you many ways to fix an unrecognized sim card issue on your Oppo A16. If the problem persists, stay calm and go to an expert that will help you solve the problem.

Why is my Oppo phone not Recognising my SIM card?

Some of the possible causes why your SIM card cannot be detected or read are the SIM maybe not be inserted correctly, the SIM card slot is not working or broken, the SIM card is disabled, or the phone software is corrupted.

How do I fix an unrecognized SIM card?

– Reboot or Shut Down Your Phone.
– Switch Your SIM Card On.
– Change the Network Mode to Auto.
– Choose the Correct Network Operator.
– Enter Your Network APN Settings Manually.
– Remove the SIM Card and Battery.
– Try Using Your Phone in Safe Mode.
– Airplane Mode Solution.

How do I get my phone to recognize a SIM card?

– Toggle airplane mode.
– Restart your phone.
– Remove and reinstall the SIM card.
– Carefully clean the SIM card.
– Try the SIM card in another device.
– Update your carrier settings.
– Reset your phone’s network settings.

Fix OPPO Phone Sim Card Not Detected Problem Solved

5 ancillary questions

What to do if oppo phone is not working?

Restart phone Press and hold both the Power and Volume Up buttons for at least eight seconds or until you see the OPPO logo. Or press and hold the Power button and tap or slide [Restart] to restart the phone. Update the phone software Try updating your OPPO smartphone’s software.

What do I do if my phone is frozen and won’t do anything?

If your phone is frozen with the screen on, hold down the power button for about 30 seconds to restart.

How fix OPPO SIM no service?

– Check phone’s signal strength.
– Turn on and off the Airplane Mode.
– Consult your operator for the SIM card.
– Check phone settings and enable mobile data.
– Change or reset carrier network settings.

How do you unfreeze a phone that won’t turn off?

Restart your phone If your phone is frozen with the screen on, hold down the power button for about 30 seconds to restart.

Why is my phone suddenly not detecting SIM card?

Carefully clean the SIM card If simply reseating the SIM card didn’t do the trick, your phone might benefit from ensuring the card is clean and the contacts are clear. Remove the SIM card from your phone, carefully extract it from the tray and then use a microfiber cloth to wipe away any dust, dirt, or debris.