Assuming it is not possible to choose the Qualcomm X20 ( 10nm ) and X24 ( 7nm ) as it is too late into the cycle. But Apple has used and tested X16 thoroughly with the iPhone X. And as far as I can see X16 offer everything the current XS Modem, Intel XMM 7560 has to offer, only likely to have better performance. So would you want a Qualcomm X16 Modem in your 2019 iPhone, or an Intel XMM 7660 Modem which is better on paper spec. On the business side it is good for all parties as Intel gave up on Smartphone Modem, and they are severely lacking in Fab capacity at the moment, there is more to gain in getting more CPUs and Server Chips out than honouring the ~100M 2019 iPhone Modem orders. And there is nothing to lose from Qualcomm, only Apple will need to make some last min changes. Personally I don't want to wait another year for an Qualcomm iPhone.