I have updated my sister’s phone from Jellybean 4.1.2 to Jellybean 4.2.2.
She found two problems,
1) Internet Mobile Data is not working
2) Speaker Volume is very low
1) Install “Internet Settings” from Settings->Xperia option. It will installs and activates your mobile data
2) After update manually Switch off and Switch On the device
Simple but vital solutions for any Sony customer
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