My iPhone got semi-wet, works perfectly fine, should I be worried?

When I went to the beach for vacation, i left my iPhone on the sand and when the tide came in, the water hit my phone. I didn't have a bag of rice so I couldnt do that option but after about two days of the speaker not working on and off, it finally works perfectly. My phone looks like it hasn't been water damaged, but before working perfectly the speaker kinda sizzled when I tried to work it once I got it out of the water.
Will my phone be okay? I don't have to worry about my iPhone slowly detoriating?

It shouldn't be a problem since your phone seems to be in working condition.
The only worry you should have is your warranty - check inside the charging port of your iphone for a tiny white strip. This white strip should be under the black connectors. If you see a pink strip instead of white, it means that there are signs of water entering your phone and your warranty is void. You might want to clean the charging port with a dry brush first though.

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