iPhone 11Pro Doesn't connect to cellular data automatically after disconnecting from wifi

Hi nasir4534,

Thank you for giving us the chance to assist you with your iPhone 11 Pro. You can count on us to do our best to assist you or get you pointed in the right direction.

We understand that you are experiencing issues switching to cellular data after disconnecting from a Wi-Fi network.

We recommend updating to iOS 14.4.2 if you haven’t. While it isn't inherently assured that an update will resolve the issue, updating to the latest version of iOS can help isolate potential software issues.

Kindly secure a backup and update to iOS 14.4.2, then let us know if the update helped.

How to back up your iPhone, iPad, and iPod touch

Update your iPhone, iPad, or iPod touch

After updating the device, do you get a prompt to update your carrier settings if you go to Settings > General > About? You can use the article below as a reference.

Update your carrier settings on your iPhone or iPad

Please keep us posted.

Take care!

nasir4534,

Thank you for these additional details. Are you experiencing the issue on multiple locations? Are you experiencing the issue on multiple apps?

These details may help us further isolate the issue.

Take care!