Working with nRF91 Series
The nRF Connect SDK provides support for developing on the nRF9160 System in Package (SiP) using the nRF9160 DK (PCA10090) and the Thingy:91 (PCA20035), and offers samples dedicated to these devices. For more details on the SiP, see the nRF9160 product website and the nRF9160 Product Specification.