The Redmi A3 adopts IP52 water-resistant ranking. Damage caused by invading liquids or dust is not covered by the warranty. In addition, the life dust splash function is degraded by daily wear and tear and cannot be permanently effective. Do not charge the phone while it is wet.
For your reference, here is more detailed information about the waterproof rating:
1. The '5' in IP52 indicates protection against dust and other solid particles. Specifically, it denotes that the device is partially protected against dust ingress;
2. The '2' in IP52 signifies protection against water ingress. This means it's protected against light splashes and dripping water, such as rain, but not immersion or heavy water jets.