Mobile Cellular Network issues after Android 11 upgrade in Nokia 2.3
Mobile network state disconnected error is like a conflict between your device and the network provider. This issue can happen when the device doesn’t show an internet icon and the internet is disconnected on your phone or there is no network at all on the device.
The reason for this issue are many, sometimes it may occur because you are trying to connect to a 4G network while your sim card supports 3G only. Sometimes, this happens when your sim card provider is unable to get a network. DinarGuru.com
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