OxygenOS 12.1: How to fix Wi-Fi/cellular data connections on your OnePlus phone?

Some who, if your OnePlus OxygenOS 12.1 phone can not connect to Wi-Fi, you should check if it can’t find a Wi-Fi signal or if it can find Wi-Fi network connections but can’t connect to it including your cellular data as well. Here you’ll find a solution and complete guide to getting your Wi-Fi cellular network online successfully.


What should I do if my Wi-Fi network is not detected?

Every smartphone users face this type of problem but didn’t find a reason. However, there are many reasons why you cannot successfully connect to a Wi-Fi network. For instance, your router or native mobile data might not work properly or there’s a problem with your phone’s network settings or there could a software-related issue mostly with OxygenOS 12.1 update.

Step 1

Your first step is to check for the Android software update – you can manually check for OTA updates by navigating to [Settings] – [System] – [System Update] – [Check for Updates] – [Download and Install Now].

After you must check if your router is working properly. Make sure it’s on, connected to the Internet, and that your phone is within the Wi-Fi range of your router. Also, Wi-Fi may not be detected if multiple devices are connected to the same router.

OxygenOS 12.1 Fix Wi-Fi Data Connections

Step 2

If you’re connected to a Wi-Fi network but can’t get online, try using a Wi-Fi network on another device. If other devices also can’t get online, there may be a problem with their network service, so check with your Internet provider.

OxygenOS 12.1 Fix Wi-Fi Data Connections
OxygenOS 12.1 Fix Wi-Fi Data Connections

OxygenOS 12.1: How to fix cellular data connections on your OnePlus phone?

Regular Troubleshooting Tips 

  • Restart your device. It may sound simple, but sometimes that’s all it takes to fix a bad connection.
  • If restarting doesn’t work, switch between Wi-Fi and mobile data.
    • Open your Settings app and tap on Network & Internet or Connections. (Depending on your device, these options may vary.)
    • Turn off Wi-Fi and turn on mobile data and see if there’s any difference.
    • If not, turn off mobile data and turn on Wi-Fi and check again.

If you have tried the above methods and still cannot use mobile data on your device, then you might be facing a cellular range issue. If you recently changed carriers but still have the same phone, you may need to contact your current carrier to have the device reset. Please contact your service provider for more information.

After each step, try using mobile data on your device. If the above steps do not resolve your issue, please refer to the Help Center for relevant information.