There is a good article in here (after BOB Showcase in IFA Berlin)
https://www.nederob.nl/2019/09/10/blockchain-phone-bob-showcased-at-ifa/All data that goes and comes from the phone goes through the Function X blockchain. The phone can operate fully on blockchain technology. Each BOB works like a node in the network, supporting the Function X blockchain. Users dont need a telephone company to call, message or browse the internet. Everything works over blockchain technology. However, consumers can also switch to a classic Android mode and use services provided by mobile phone operators.
BOB isnt available in stores yet. The phone is currently in production. Pre-orders are expected to open somewhere during Q4 2019. PundiX is planning to launch 5000 phones at first, each priced $599.