Q: iphone 5s Display shows a blank white screen

Hello iqukakkatt,

If I understand correctly your iPhone screen is totally white and does not respond to the Sleep/Wake button. I would use these steps from the following article to help troubleshoot the issue:

Get help with the screen on your iPhone, iPad, or iPod touch

If you see a solid color screen (black, white or blue)

 

1. Plug in your device to a power source. If you see the low-battery screen when you plug in, let your device charge for at least 10 minutes (20 minutes for iPad) before using it.
2. Reset your device while it's plugged in.
3. If resetting doesn’t fix the issue, restore your device.
4. If you still see the issue after you restore, contact Apple Support.

Thank you for using Apple Support Communities.

Regards,

Sterling