How to recover data from the water damaged iPhone?

Even if you are careful enough, sometimes your iPhone can get wet accidentally. You may spill coffee on it, or it falls into water. In that case, what should you do to save your iPhone from damage and data loss?
What you should do after your iPhone get wet?
Do not try to turn it on
After your iPhone get wet or fall into water, you should not try to turn it on. Because it will damage your iPhone.

What you should do immediately after that:
If your iPhone is covered with iPhone case, you should remove the case to reduce water damage.
Shaking your iPhone to shake out water as much as possible, and use a fresh cloth to dry the water.
Remove the SIM card from iPhone card slot. Although you cannot remove battery from iPhone.
Leave your wet iPhone in a warm place. You should not use the hair dryer to blow-dry your iPhone as the temperature is too high so that to damage your iPhone. But you can put your iPhone in a warm place to help dry it.

While if you are worried about your iPhone, you can take it to the repair company to get help from professionals.
After you have dried your iPhone, you can try to turn it on. If it works, that’s great. If not and the professionals say that it has dead, you will lost all data on iPhone. But you still can restore your data if you have backup in iTunes or iCloud.
How to restore data from iTunes backup?
If you have backed up your iPhone to iTunes, your iTunes backup is stored on your system drive. As long as you have not delete them, you can recover your data from the backup with the help of data recovery software.
Install H Data iPhone recovery software on your computer and open iTunes.
Choose the second recovery mode on the recovery software: View and restore from iTunes backup.
Choose one iTunes backup to scan. You can decide which backup to scan by the displayed device name, date, and serial number. If you do not find the one you need, you can click to find it on your computer by manual.
After scan, all data in iTunes backup show up on the software. Click to preview them. If you find the data you need, you can tick them and click to extract them out.
All in all , you should take care of your iPhone to avoid water damage, and minimize, damage after accident occurs. Remembering to back up your data regularly. Only then you can restore your lost data.