I have a Sony Xa. Simply free.
How can I install the three firmware on it so I can use the three VoLTE network?
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I have a Sony Xa. Simply free.
How can I install the three firmware on it so I can use the three VoLTE network?
Are these firmware official or did you found it on the internet? Make sure is supported in your Sony phone and it is, there should be a step by step guide. Check the XDA website.