Memory in internal SD card shows full

My phone is showing error as " Internal SD card is full, please delete useless files, otherwise..."

I have deleted almost all apps, messages are NIL still i cannot receive any messages nor i can download any new app in my phone. Phone storage shows 2.2 mb free and device storage shows 50% memory free i.e. available : 6.3 GB out of total 12.6 GB.

Please suggest what to do?? I do not get the time to visit the service center. Please help...

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I am having the same problem :( surfing all over the net for the fix :/

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Is your phone encrypted or not? after the deletion of apps and messages did you tried to restart your phone?

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