Mobile data status is disconnected

[Sharona Joseline]

Hi, I was not able to connect to my mobile network after I turned the Flight mode on and off. I attempted to reset the network settings, removed and reinserted my SIM card, but I was still unable to connect to my mobile data.

And also it shows "No Service" and doesn't connect to my SIM until I restart the mobile when turned on and off the Flight mode

[-Robot-]

Does that happen at a specific location? Or everywhere?

I would start by trying to get a replacement sim, checking with network provider if start to not work all of a sudden

[Sharona Joseline]

It happens everywhere, every time the flight mode is turned on and off.

[Tourbillon De La Vie]

Was the phone debloated of some apps and/or rooted?

Until issue is fixed consider using do not disturb instead 

[AndrewL · Accepted solution]

@Sharona Joseline: To troubleshoot the issue, please swipe up from your Home screen and head to Settings > Software update > Download and install, and check for any available updates for your device. Now, head to Settings > Connections > Mobile networks > Access point names > Tap the 3 dots in the top right > Reset to default, to see if this helps. 

If the problem persists, power off your phone, remove the SIM card and give the gold contacts a rub with a dry, microfibre cloth, then re-insert it and power the device back on. Also, you may wish to head to Settings > General management > Reset > Reset mobile network settings > Reset settings. You should also try your SIM card in another compatible phone, as this will help to determine if the problem lies with the phone, or your SIM/network provider.