Bicyclecamper wrote:

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I have a Sat. Phone, golden oldie, but it works in the Simpson already, no real difference to this new Mobile phone link up to Sat/s as well. I am not a mobile phone user, I don't need to play with a phone to get enjoyment like everybody else does.

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 The two technologies are different. The satellite phones probably either use a geostationary or something like the Iridium satellites. They are just a few whereas the Starlink and other low orbit satellites number in the thousands. They also get slowed down by atmospheric drag and then need to be regularly replaced. Each launch releasing CO2e gases into the atmosphere.

Each system requires thousands of satellites and yes, it will contribute to the space junk and Kessler effect. Especially if a low orbit collision shifts the space junk into higher orbits. Thus threatening other satellites and space labs.

They also interfere with astronomy. The satellites appear as rows of streaks across the observations, often blurring out the weaker light from the objects that the astronomers are trying to view.

In my opinion this is the worst thing that Elon Musk has done and it appears that Jeff Bezos and other companies are following suit. I'll never use it on principles.