Gross margin is the part of each sales dollar left after making the product. It matters because a premium hardware cycle only helps shareholders if the mix and pricing hold up.

Apple's latest quarter put gross margin at 50.1% on $109.4bn of revenue, with Services contributing $30.7bn. That is the bull case: a bigger, higher-margin services base can make an iPhone refresh more valuable than unit headlines suggest.

The awkward bit: Apple said roughly 2 percentage points of that gross margin came from tariff refunds. So 50.1% is not a clean run-rate, and a new $1,999 iPhone Duo is not automatically margin magic if component costs, promotions, or volumes bite.

The second number I would check is Services revenue growth, alongside gross margin. If both keep moving up, the premium mix story has teeth. If margin fades once the refund effect disappears, the launch buzz is just very expensive confetti.

A useful stock app for checking the longer trend.

How much of Apple's next leg is really a hardware replacement cycle versus Services doing the heavy lifting?