Why can t vivo phones recognize SIM cards?

Vivo phone suddenly does not recognize SIM card.

Probably due toThe SIM card is looseThe system data is abnormalorsThe IM card is damagedResult in.

You can try the following:

1. TryTake out the SIM card and reinstall itGive it a try.

Second, go to the phone settings - system upgrade detection to see if there is a new versionUpgrade your phone's system to the latest versionUse.

Steps:

1. Find the settings icon on the desktop of your phone.

2. Select System Upgrade.

3. Detect the new version.

Reset All Settings Erase all data

Steps:

1. Find the settings icon on the desktop of your phone.

<>3. Select Factory Reset.

4. Select Reset All Settings to clear all data.

Notes:Erasing all data will delete the data stored on the phone, so back up your phone's important data before you do it

Fourth, tryReplace a SIM cardTry it.

Fifth, if you try the above methods, it will not workYou need to take your mobile phone to the after-sales service center for testing and processing

Procedure (take the computer as an example):

1. Enter ** in the browser: enter the vivo official website.

2. Slide the page to the bottom and select the service network to query.

3. Select the province or city where you are located (e.g., Guangzhou, Guangdong).

Notes:Before going to the after-sales service, dial ** to confirm the after-sales working hours and plan the itinerary reasonably

How to deal with SIM card not recognized by mobile phone:

1. Please confirm whether the SIM card type is correct according to the mobile phone model. An incorrect SIM card can damage the card tray and card slot or even fail to be removed;

2. Please make sure to use a standard SIM card. Do not use a non-standard SIM card or cut the card by yourself, cutting the card can easily cause the SIM card to be unable to recognize or damage the mobile phone, it is recommended to go to the business hall to change the original standard SIM card;

3. Please confirm whether the card is placed correctly. Whether the notch of the SIM card corresponds to the card slot;

4. Please confirm whether the surface of the SIM card is dirty. If the SIM card has been used for a long time, you can wipe the surface of the chip with alcohol, or go to the business office to replace the original standard SIM card. If the SIM card is used for a long time, the metal surface is easy to be oxidized, which is easy to cause probabilistic card recognition;

5. Do not plug or unplug the SIM card when the device is turned on. After inserting the SIM card, please restart your phone and try;

6. If the problem still exists, please back up the data in advance and bring the purchase invoice to the after-sales service point for maintenance.

If your phone can't read the card or can't detect the SIM card, you can try to put the card on another mobile phone to try it, and determine whether it is a card problem or a mobile phone problem by changing the card and the phone.

Hello, the mobile phone does not recognize the mobile phone card, please give priority to check whether the SIM card is installed correctly, whether it is a standard card: please insert the correct standard card, like the main card slot of telecom standard models, generally only support telecom cards. Please insert the correct size card, as the incorrect size card may be inserted but not recognized.

Some models do not support hot swapping, please restart your phone after inserting the SIM card.

If you insert the card correctly, use a standard card, and restart the phone after inserting the card, and the SIM card is still not recognized, please try the following solutions:

If you mistakenly turn on airplane mode on your mobile phone and mistakenly think that the card is not recognized, please turn off airplane mode.

Please go to Settings >> Dual SIM Management to check if this SIM card is not enabled, and if so, please enable this SIM card.

Please try to insert this SIM card into another mobile phone to detect whether the SIM card is damaged; Please try inserting a SIM card that can be recognized by another mobile phone into this mobile phone to check if the mobile phone card slot is damaged.

If the SIM card has been used for a long time, and the chip is worn or oxidized severely, resulting in poor contact, it is recommended to go to the business hall to replace the standard card.

If none of the above methods fail, we recommend that you back up your data and upgrade to the latest system version.

If the problem still cannot be solved, it is recommended to back up the data and bring the purchase invoice to the branch for testing.

If you are using a vivo mobile phone, the mobile phone does not recognize the SIM card, you can operate as follows:

1. Restart your phone and try.

Please restart the phone, the phone will re-read the SIM card to see if it can be restored.

2. Check your phone's settings to see if the SIM card is enabled.

Go to the phone settings - mobile network - SIM card information and settings - click to enter the corresponding SIM card to enable the SIM card, make sure the switch is turned on.

3. Check whether the SIM card is installed backwards.

Please refer to the card installation steps in the user manual to check whether the SIM card is loaded in the correct direction.

Check the card installation steps: Go to Settings - System Management - Customer Service - User Manual - Mobile Phone Overview and Quick Start Installation and Preparation.

4. Check whether the SIM card looks good.

Observe whether there are stains on the metal surface of the SIM card, clean the stains on the surface of the SIM card, and avoid the SIM card being unrecognized due to poor contact. If you use a cropped SIM card, the SIM card shape may not be standard, resulting in poor contact and the SIM card cannot be recognized, it is recommended to go to the operator's business office to replace it with a standard SIM card.

5. Cross-validation.

Please install the SIM card to other devices, or install other SIM cards to your mobile phone for comparison and testing to determine whether it is a SIM card failure.

6. Service center testing.

If the above radical method fails to solve the problem, please back up the mobile phone data in advance, bring the mobile phone and purchase voucher to the vivo customer service center for testing, enter the vivo official website vivo**app--my--service outlets or pay attention to WeChat*** "vivo customer service"-self-service-after-sales outlets to select provinces and cities to inquire about the service center information, it is recommended to contact in advance before going to avoid empty running, reasonably plan the itinerary, and travel safely.

You can try the following things to see if that solves the problem:

1.Try to reinsert the SIM card or change it to another SIM card (some models do not support the use of telecom cards).

2.Swipe out the shortcut bar at the bottom of the screen - turn off the airplane mode on your phone and then turn it on to observe, or you can try to change the network environment.

3.If two telecom SIM cards are installed on the telecom dual-SIM phone, one of them cannot be recognized.

4.Go to the phone settings - mobile network to check if the SIM card is turned off.

If your phone can't read the card or the SIM card can't be detected, there may be one of the following situations:

1. The contact between the metal contacts of the mobile phone card and the mobile phone is insufficient.

Second, the mobile phone card is damaged.

3. Whether the location is a signal blind area or suddenly no signal.

Fourth, you can try to put the card on other mobile phones to try, and judge whether it is a problem with the card or the mobile phone through the method of changing the card and changing the phone.

First of all, check if the mobile phone card slot is loose? Then restart the system to see if it still can't be recognized, and finally, then you can basically only send it for inspection.

Is it that you installed the phone card backwards, or the phone card slot is loose.

It may be that there is a problem with your ** card, or it may be the reason for the mobile phone.

It should be that the mobile phone card slot is faulty, or it is better to take it to the mobile phone repair shop to take a look.

Contact customer service and return to the factory for maintenance!