Cryptocurrency sales network firm Pundi X showed off its Blok on Blok blockchain smartphone at the IFA trade show in Berlin
Source: https://cointelegraph.com/news/pundi-x-unveils-worlds-first-phone-powered-entirely-by-blockchain
Pundi X Says Its BOB Smartphone Is the First Powered ‘Entirely by Blockchain’
September 11, 2019
CoinTelegraph