My understanding was that it had been widely reported for years and years now that Apple has repeatedly attempted to make their own Modem, and then it fails, an

My understanding was that it had been widely reported for years and years now that Apple has repeatedly attempted to make their own Modem, and then it fails, and they go back to signing another contract with Qualcomm. IIRC they did this as recently as last year. (Sorry if the article goes into this, I got paywalled)