https://www.cape.co/our-features
https://www.phreeli.com/privacy
See also:
https://samdbrice.medium.com/cape-cellular-the-fbi-honeypot-...
https://news.ycombinator.com/item?id=47146171
https://discuss.grapheneos.org/d/17564-i-dont-own-a-cellphon...