Can I use a power adapter with high voltage and current?

Andrew asks:
The adapter on the phone burned out 5.5v 500mA., Is it possible to replace the adapter 5.7v 800mA. Not dangerous?
The answer to the question:
Hello! Most likely not dangerous. What kind of phone is that? The fact that the voltage is a little more is unlikely to play any role, and the fact that the output current is more - moreover, the phone will take as much as it needs.
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