iPhone won't turn on after being in water

The phone is toast. You will need to replace that phone.

If you want to transfer the data from the damaged phone to a new phone, you will need a backup of the damaged phone on iCloud, Mac or a PC that was made before the phone was damaged.

In other words, if you have not yet backed up the damaged phone, it is too late to do this now.

I would try leaving it sit for a few more days in a dry area and try again. While iPhones are water resistant they are not waterproof. Your profile says you have an iPhone 11 with is old enough for seals to have deteriorated a little bit, may be enough tot let water in.

Apple could help, if your iPhone still has a non-expired warranty, if they can’t help, than DO NOT leave your phone in uncooked rice, as rice can get in the charging port making the situation worse, I recommend leaving the phone in an area that is dry with good airflow.

Whatever you do – do NOT place the phone in rice.

Uncooked rice absorbs water, but in this case, it can work against you. Tiny particles of rice can get stuck in your phone's ports and expand – clogging your charging port, and trapping water inside the phone. Instead of saving your phone, you risk further damaging it.

I highly recommend you to go to the nearest apple service center it might be the battery, but just let the apple service touch your phone and fix it.

Uncooked rice does not absorb water or aid in the evaporation of water in any significant way.

It is a myth.

Best bet is to leave the device in a room temperature area with good airflow.

Apple could help, if your iPhone still has a non-expired warranty

Water damage is not covered by the AppleCare warranty. In fact, Apple will not attempt repairs on a water damaged phone, even if you are willing to pay them.

nor444 (Author)

For those who insist teaching their devices to Swim, should at

least impart & choose to instruct them, correct use of Snorkel.

Cooking devices not advised after near near-drown experience.

When my Apple products think to deep dive into shallow ponds

I'm first to inform them of their folly, and tell them to take higher

ground; traverse the dangerous terrain, in safe manner, is best.

Prevention works: Taught my G3 Mac how to swim with Snorkel.

Trained him; by viewing old movies of jeeps: How to 'ford rivers.

..Be sure to get them warm & dry out, least they get river rot..

K Shaffer wrote:

nor444 (Author)

For those who insist teaching their devices to Swim, should at

least impart & choose to instruct them, correct use of Snorkel.

Cooking devices not advised after near near-drown experience.

When my Apple products think to deep dive into shallow ponds

I'm first to inform them of their folly, and tell them to take higher

ground; traverse the dangerous terrain, in safe manner, is best.

Prevention works: Taught my G3 Mac how to swim with Snorkel.

Trained him; by viewing old movies of jeeps: How to 'ford rivers.

..Be sure to get them warm & dry out, least they get river rot..

https://discussions.apple.com/content/attachment/499e2c08-a16f-4e12-aa1c-790ef402d7dd

I love your posts 😀

Jacobp0gi wrote:

I highly recommend you to go to the nearest apple service center it might be the battery, but just let the apple service touch your phone and fix it.

That might be a good idea, IF Apple would even touch a phone which has suffered liquid damage, but they simply WON'T. Did you read ANY of the posts in this one page thread, before offering advice which won't help?