https://www.reuters.com/article/us-health-coronavirus-india-app/india-launches-contact-tracing-app-for-jiophones-in-virus-battle-idUSKBN22Q0TV >India's technology ministry said on Thursday it had rolled out a version of its Bluetooth contact-tracking app for 5 million JioPhones, the cheap internet-enabled devices sold by Reliance Industries' telecoms unit.