my phone is fully charged but the screen won't turn on. Can it be fixed
My phone is completely charged, but the screen won't turn on. Can this be fixed or do I have to buy a completely new iPhone?
We can't answer that. See this link and try what is suggested --> If your iPhone, iPad, or iPod touch won't turn on or is frozen - Apple Support
If you try everything and nothing helps, it would be time to schedule an appointment at your Apple Store Genius Bar for evaluation and options.