Hi, my sony c5 ultra telephone does not turn on. T he red charging lamp is not green when I plug the phone into the charger. I've been in charge for more than 24 hours, but it still hasn't improved. Also I tried different charger but again the problem is not solved. I thought the problem was battery-related and I changed the battery with a new one, but still the problem is not solved. what can be the problem and what can I do about the solution? Thank you..
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