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No data connection: Causes and solutions

If there is an issue with the data access, we recommend the following:

  • If you have a strong mobile coverage, first try to reboot your device
  • Go to iPhone Settings – Mobile Data/Cellular and make sure that Data Roaming is enabled
  • Go to iPhone Settings – Mobile Data/Cellular – Secondary/Yesim – and make sure that Network Selection is automatic
  • Go to iPhone Settings – Mobile Data/Cellular – Secondary/Yesim – turn off LTE mode, switch to 3G only

Note: Do not remove the Yesim profile and do not scan the QR code again, as these actions can delete the predefined settings.

When sending your message, also make sure to include as many of the necessary details as possible:

  • Name of the country/region you are in
  • Describe troubleshooting steps that you have done

Feel free to upload screenshots of your iPhone settings. 

  • Settings – Mobile data/Cellular – switch both calls and data services to Yesim – send us the screenshot
  • On this page under Cellular plans – tap on Secondary/Yesim plan – send us the screenshot
  • Then go to Cellular/Mobile data network – send us the screenshot

It will help us to identify the issue and find the solution shortly.


We hope you find our services easy to use and hassle free. But if you ever need any help, please don’t hesitate to contact us. We are looking forward to hearing from you!

Updated on April 1, 2025
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