Signal strength would be better if you hold it in a certain way and this was true for some other phones as well. I had an iPhone 4 and never paid attention to how I held it, and it always worked perfectly fine. Maybe it's because I used a bumper most of the time (like most people, at least here in Europe).
The return rate of the iPhone 4 was much lower than that of the 3GS [1], so apparently it did not affect many users in practice.
It's still bad design, but when I compare it to widespread issues I had with other tech devices relatively minor (e.g. spontaneously resetting Moto X 2013, self-destructing Moto 360 smartwatch back, etc., constant BlueTooth headphone drops on the Nokia 7 or 7.1).
The (by far) worst Apple design issue that affected me and people I know was the butterfly keyboard. It has left me sour for years and I considered to stop using Macs. I am very happy they have finally resolved that now. But many of the butterfly MacBooks were simply defective products. Only the later generations with seals hold up pretty well.
The return rate of the iPhone 4 was much lower than that of the 3GS [1], so apparently it did not affect many users in practice.
It's still bad design, but when I compare it to widespread issues I had with other tech devices relatively minor (e.g. spontaneously resetting Moto X 2013, self-destructing Moto 360 smartwatch back, etc., constant BlueTooth headphone drops on the Nokia 7 or 7.1).
The (by far) worst Apple design issue that affected me and people I know was the butterfly keyboard. It has left me sour for years and I considered to stop using Macs. I am very happy they have finally resolved that now. But many of the butterfly MacBooks were simply defective products. Only the later generations with seals hold up pretty well.
[1] https://en.wikipedia.org/wiki/IPhone_4