https://techcrunch.com/2020/05/02/jio-coronavirus-security-lapse/

Since the start of the outbreak, governments and companies have scrambled to develop apps and websites that can help users identify COVID-19 symptoms.

India’s largest cell network Jio, a subsidiary of Reliance, launched its coronavirus self-test symptom checker in late March, just before the Indian government imposed a strict nationwide lockdown to prevent the further spread of the coronavirus. The symptom checker allows anyone to check their symptoms from their phone or Jio’s website to see if they may have become infected with COVID-19.