Is iPhone waterproof or water resistant ?

Well I had an iPhone SE 2020 …Pretty decent phone ,looks like an 8 but I’ve always felt it late better than the X .. Went to a party n took pictures in the pool ,deep down in the pool ..Pretty cool ,high quality images ..I was impressed ,I started getting deeper n deeper into the pool with it …

After sometime the home button started acting up ,it was too sensitive n sometimes not reactive ..I had to buy another phone coz apparently the joke button can’t be replaced since it’s embedded with the motherboard..Is an iPhone waterproof or water resistant ? Can we swim with it and take pictures under water ?