https://www.theregister.co.uk/2018/10/30/iphone_xr_teardown/

After years in the doldrums, the iPhone XR could boost Apple's phone shipments.

iFixit's teardown revealed that the trusted, conventional iPhone design now incorporates a modular (removable) SIM card reader and single-deck motherboard. Intel provided the LTE modem – not surprising given Apple's ongoing legal dispute with Qualcomm. Silicon from TI, Skyworks, Broadcom and Toshiba (flash memory) can also be found inside.