That was half sarcastic and half statement.Do you really think they do no real world testing?
Let me help you. They do EXTENSIVE real world testing. I know a person that works at AT&T who tests new devices and had the iPhone XS months before release under NDA to perform thorough testing.
When you sell as many from as Apple in as many locations, you simply can’t test every scenario. These phones get to every corner of the world, small and large cities.
This will be resolved.
And with your statement it would be obvious then that Apple knew had problems and released anyway.