1. Turn off the device immediately and don’t press any buttons.
   
   
2. If your phone is water resistant and you’ve spilt or submerged it in a liquid other than water, both Apple and Samsung recommend rinsing it off by submerging it in still tap water (but not under a running tap, which could cause damage).
   
   
3. Wipe the phone dry with paper towels or a soft cloth.
   
   
4. Gently shake the device to remove water from the charging ports, but avoid vigorous shaking as this could further spread the liquid inside.
   
   
5. Remove the SIM card.
   
   
6. Use a compressed aerosol air duster to blow the water out if you have one. Avoid using a hot blow dryer as the heat can wreck the rubber seals and damage the screen.
   
   
7. Dry out the phone (and especially the ports) in front of a fan.
   
   
8. Leave your phone in an airtight container full of silica gel packets (those small packets you get inside new shoes and bags), or another drying agent. These help absorb the moisture.
   
   
9. Do not charge the phone until you are certain it’s dry. Charging a device with liquid still inside it, or in the ports, can cause further damage. Apple suggests waiting at least five hours once a phone appears dry before charging it (or until the alert disappears).

(Apr 9, 2021 12:34 AM)C C Wrote: https://theconversation.com/phone-wet-and-wont-turn-on-heres-how-to-deal-with-water-damage-hint-soaking-it-in-rice-wont-work-158633

EXCERPT: . . . Firstly, do not put your phone in a container of rice. It’s a myth that rice helps in drying out your phone. Instead, follow these steps:

1. Turn off the device immediately and don’t press any buttons.
   
   
2. If your phone is water resistant and you’ve spilt or submerged it in a liquid other than water, both Apple and Samsung recommend rinsing it off by submerging it in still tap water (but not under a running tap, which could cause damage).
   
   
3. Wipe the phone dry with paper towels or a soft cloth.
   
   
4. Gently shake the device to remove water from the charging ports, but avoid vigorous shaking as this could further spread the liquid inside.
   
   
5. Remove the SIM card.
   
   
6. Use a compressed aerosol air duster to blow the water out if you have one. Avoid using a hot blow dryer as the heat can wreck the rubber seals and damage the screen.
   
   
7. Dry out the phone (and especially the ports) in front of a fan.
   
   
8. Leave your phone in an airtight container full of silica gel packets (those small packets you get inside new shoes and bags), or another drying agent. These help absorb the moisture.
   
   
9. Do not charge the phone until you are certain it’s dry. Charging a device with liquid still inside it, or in the ports, can cause further damage. Apple suggests waiting at least five hours once a phone appears dry before charging it (or until the alert disappears).
   

If the above steps don’t help and you’re still stuck with a seemingly dead device, don’t try opening the phone yourself. You’re better off taking it to a professional... (MORE - details)