How to Fix Vivo iQOO U3x Sim Card Not Detected

Vivo iQOO U3x

A SIM card is needed not only for mobile communication. She stores phone numbers, allows you to access the Internet (when connecting special tariffs), and in some cases also serves as a way to authorize the phone (PIN code for SIM cards). But sometimes Vivo iQOO U3x SIM card not detected for some reason:

  1. Incorrectly inserted SIM card.
  2. Malfunctions and defects of the SIM card or slot.
  3. Problems with drivers.
  4. Software issues.
  5. The SIM card is not activated in the settings.

Let's take a closer look at each of them.

The reasons for the problem with the SIM card on Vivo iQOO U3x

Issues with SIM cards are divided into hardware and software.

To begin with, let's look at hardware issues.

Incorrectly inserted SIM card

There are currently two types of SIM cards in active use: Micro-sim and Nano-sim. The former is easily confused in size with SD cards. Because of this, sometimes the Micro-sim is placed in the slot for external memory and does not work. This issue is fixed by inserting the Micro-sim into the desired slot.

Nano-sim by size is small — if they are inserted incorrectly, the compartment with a place for the SIM card will still close, but the mobile connection will not work. The issue is also solved by the correct insertion of the Nano-sim.

Malfunctions and defects of the SIM card

The SIM card is damaged in several ways: incorrect circumcision scratches or furrows on the contacts, mechanical shocks, etc. There is one solution — replacement of the SIM card with a new one at the nearest branch of your operator.

Malfunctions and defects of the slot

The interaction of the SIM card with the Vivo iQOO U3x phone occurs through the contacts in the connector. Firstly, these contacts can oxidize when liquid gets on them. Secondly, the connector may break due to mechanical impact. Thirdly, the contacts and connector may become dirty over time if there are chips or cracks on the phone case.

It is difficult to solve the first two problems on your own — you need to disassemble the phone, check the operation of the circuits and, if necessary, replace broken parts. It is easier to give the device to a service center.

But, as for pollution, you can cope with them yourself:

  1. Turn off the phone. We are waiting 5–10 minutes.
  2. We dip a thin cotton swab in pure alcohol.
  3. Wipe the contacts and connector through the outer hole with light movements without pressure.
  4. We wait at least 1 hour, or until the alcohol dries.
  5. Turning the phone back on.

If you are afraid to clean yourself, contact specialists. If the SIM card is not visible even after cleaning, and other methods did not help, take the smartphone to the service center.

Programmatic reasons include the following:

Problems with Vivo iQOO U3x phone drivers

Owners of new phones often face similar problems. Sometimes the manufacturer is in such a hurry to present a working model to the buyer that it does not prepare the operating system for full operation.

Software problems

In smartphones, separate programs are used for calls and messages. Sometimes, after the update, errors appear in them that do not allow you to identify the SIM card.

The SIM card is not activated in the settings

If the SIM card is no longer activated automatically, then:

  1. Need to go to settings.
  2. Item "Network and Internet".

  3. Submenu "SIM card and mobile network".
  4. In the "SIM card Information and Settings" menu, select the desired SIM card.
  5. We turn the toggle switch opposite the "Activate SIM card" to the enabled position.
  6. If the SIM card has become active, then your phone number will appear next to the "Number" item.

Checking the SIM card

Testing on another device

To check the SIM card, try inserting it into another smartphone. If it works, then errors occur on your device, and they are not related to the SIM card. In any case, remember that often the SIM card does not work simply because it was blocked by the mobile operator.

Checking for damage

It will also not hurt to inspect the SIM card for damage — scratches and chips immediately catch the eye.

What to do if Vivo iQOO U3x SIM card not detected

Rebooting the device

Software problems are sometimes solved by rebooting. To do this, follow these steps:

  1. Hold the power button for 5–10 seconds.
  2. A menu appears in which to select the "Restart" option.
  3. Wait 1–2 minutes and check if the SIM card works.

Installing software updates

The SIM card may not work due to software errors. It is impossible to fix them yourself. The only option — wait until the software developer releases an update with bug fixes. They usually come out within a couple of hours, a maximum of several days. We have a separate material on how to update Vivo iQOO U3x so we will not dwell on this process in detail here.

Resetting network settings

This method is controversial since it does not solve the main problems with SIM cards. But if you decide to try it, then:

  1. Go to settings.
  2. Go to the "System" section.
  3. Select the item "Resetting settings".
  4. Select "Reset settings".
  5. Click on "Reset settings".

Remember that resetting the settings deletes all network-related data. This also applies to Wi-Fi passwords and devices linked via Bluetooth.

Contacting the service center

If none of the described methods helped you, then just contact the service center. Firstly, this way you will absolve yourself of all responsibility. Secondly, professionals are more likely to be able to solve all your problems.

Share this page with your friends:

See also:



How to flash Vivo iQOO U3x

How to root Vivo iQOO U3x

Hard reset for Vivo iQOO U3x

How to reboot Vivo iQOO U3x

How to unlock Vivo iQOO U3x

What to do if Vivo iQOO U3x won't turn on

What to do if Vivo iQOO U3x doesn't charge

What to do if Vivo iQOO U3x doesn't connect to PC via USB

How to take a screenshot on Vivo iQOO U3x

How to reset FRP on Vivo iQOO U3x

How to call recording on Vivo iQOO U3x

How to update Vivo iQOO U3x

How to connect Vivo iQOO U3x to TV

How to clear the cache on Vivo iQOO U3x

How to backup Vivo iQOO U3x

How to disable ads on Vivo iQOO U3x

How to clear storage on Vivo iQOO U3x

How to increase font on Vivo iQOO U3x

How to share internet on Vivo iQOO U3x

How to transfer data to Vivo iQOO U3x

How to unlock bootloader on Vivo iQOO U3x

How to recover photos on Vivo iQOO U3x

How to record the screen on Vivo iQOO U3x

How to find blacklist in Vivo iQOO U3x

How to set up fingerprint on Vivo iQOO U3x

How to block number on Vivo iQOO U3x

How to enable auto-rotate on Vivo iQOO U3x

How to set up or turn off an alarm on Vivo iQOO U3x

How to change ringtone on Vivo iQOO U3x

How to enable battery percentage on Vivo iQOO U3x

How to turn off notifications on Vivo iQOO U3x

How to turn off Google assistant on Vivo iQOO U3x

How to turn off the lock screen on Vivo iQOO U3x

How to delete app on Vivo iQOO U3x

How to recover contacts on Vivo iQOO U3x

Where is the recycle bin on Vivo iQOO U3x

How to install WhatsApp on Vivo iQOO U3x

How to set contact photo in Vivo iQOO U3x

How to scan QR code on Vivo iQOO U3x

How to connect Vivo iQOO U3x to computer

How to install SD card in Vivo iQOO U3x

How to update Play Store in Vivo iQOO U3x

How to install Google Camera in Vivo iQOO U3x

How to enable USB debugging on Vivo iQOO U3x

How to turn off Vivo iQOO U3x

How to charge Vivo iQOO U3x

How to use the camera on Vivo iQOO U3x

How to find lost Vivo iQOO U3x

How to set password on Vivo iQOO U3x

How to turn on 5g on Vivo iQOO U3x

How to turn on VPN on Vivo iQOO U3x

How to install apps on Vivo iQOO U3x

How to insert a SIM card in Vivo iQOO U3x

How to enable and configure NFC on Vivo iQOO U3x

How to set time on Vivo iQOO U3x

How to connect headphones to Vivo iQOO U3x

How to clear browser history on Vivo iQOO U3x

How to disassemble Vivo iQOO U3x

How to hide an app on Vivo iQOO U3x

How to download YouTube videos on Vivo iQOO U3x

How to unblock a contact on Vivo iQOO U3x

How to turn on the flashlight on Vivo iQOO U3x

How to split the screen on Vivo iQOO U3x

How to turn off the camera sound on Vivo iQOO U3x

How to trim video on Vivo iQOO U3x

How to bypass the Google account on Vivo iQOO U3x

How to fix black screen on Vivo iQOO U3x

How to change the language on Vivo iQOO U3x

How to open engineering mode in Vivo iQOO U3x

How to open recovery mode in Vivo iQOO U3x

How to find and turn on a voice recorder on Vivo iQOO U3x

How to make video calls on Vivo iQOO U3x

How to transfer contacts to Vivo iQOO U3x

How to enable/disable «Do not disturb» mode on Vivo iQOO U3x

How to enable/disable answerphone on Vivo iQOO U3x

How to set up face recognition on Vivo iQOO U3x

How to set up voicemail on Vivo iQOO U3x

How to listen to voicemail on Vivo iQOO U3x

How to check the IMEI number in Vivo iQOO U3x

How to turn on fast charging on Vivo iQOO U3x

How to replace the battery on Vivo iQOO U3x

How to update the application on Vivo iQOO U3x

Why the Vivo iQOO U3x discharges quickly

How to set a password for apps in the Vivo iQOO U3x

How to format Vivo iQOO U3x

How to install TWRP on Vivo iQOO U3x

How to set up call forwarding on Vivo iQOO U3x

How to empty the recycle bin on Vivo iQOO U3x

Where to find the clipboard on Vivo iQOO U3x

Sim Card Not Detected on Another Phones