This morning I woke up and my Iphone looks dead, even though it was on charge whole night

If your iPhone is not turning on, despite being charged overnight, there are several things you can try to troubleshoot the issue:

1. Check the charging cable and power adapter: Ensure that the charging cable and power adapter are not damaged and are firmly connected to your iPhone and the power outlet. You can try using a different cable or adapter to see if that resolves the issue.
2. Force restart your iPhone: Press and hold the power button and home button (on iPhone models with a home button) or the power button and volume down button (on iPhone models without a home button) simultaneously for about 10 seconds until the Apple logo appears.
3. Put your iPhone in recovery mode: Connect your iPhone to a computer, open iTunes (or Finder on a Mac running macOS Catalina or later), and follow the on-screen instructions to put your iPhone in recovery mode. You can then restore your iPhone using iTunes or Finder.
4. Contact Apple Support: If none of the above steps work, you may need to contact Apple Support for further assistance. They may be able to diagnose the issue and recommend a solution, which may involve repair or replacement of your iPhone.

It's also worth noting that if your iPhone is still under warranty, you may be able to get it repaired or replaced for free.

Ensure the charging cable and power adapter are functional. Try a hard reset by holding the power and home buttons simultaneously until the Apple logo appears.

If the issue persists, consult Apple support or visit an authorized service center for further assistance.

Make sure your charging cable and power adapter are working properly. Perform a hard reset by holding down the power and home buttons at the same time until the Apple logo shows up.

If the problem continues, reach out to Apple support or go to an authorized service center for additional help.

if it was me then I would try

Force restart iPhone - Apple Support

There could be various reasons why your iPhone appears dead despite being charged overnight. It might be due to a faulty charger or charging cable, preventing the device from receiving any power.

Alternatively, the charging port or battery itself could be damaged, hindering the charging process. Sometimes, software issues or crashes can also cause the phone to appear unresponsive. Try to check marketplace. Checking the charger, cable, and port for any physical damage and attempting to charge the phone using a different charger or cable could help diagnose the issue. If the problem persists, seeking assistance from an authorized service provider.