This video from CNBC offers a behind-the-scenes look at the facilities where Apple tests its M-series chips for Macs and the A-series chips for iPhones. You can see the labs at around 3:21 and 7:05.

Aside from that, Johny Srouji, Apple’s senior vice president of hardware, also hints at the possibility of the company developing its own modems, stating “We care about cellular and we have teams enabling that.”