Malware on My Android Phone
A QR code reader was the problem then... I am an Android user since the dawn of time and I was so surprised when my wife showed me that on her iPhone the QR code reader is embedded in her camera app... I wonder why it is not the same in any version of Android that I have used (now I am on Android One).This plus the native support for CardDav and CalDav are pushing me to try iOS next time I have to change my phone.