Google's Pixel 2 phones don't need SIM cards
 

Google added a lot to the Pixel 2 and Pixel 2 XL, but one of its more intriguing upgrades comes from what it's taking away: the need for a SIM card. Both devices still have a nano-SIM slot (contrary to a few rumors), but they also use eSIMs like that...

https://www.engadget.com/2017/10/04/...ones-use-esim/