I just swapped my phone from S4 to S7 edge and keep getting this message when trying to use myvodafone appthat the version is no longer supported. I uninstalled and reinstalled and still the same.
I searched on this forum and I had done what was suggested for another post. Someone asked where the handset is from in that post (Dec 2015) and yes, it is a branded import but....... I went and checked my son's S2 that we bought years ago here, and he is getting the same message whereas it has always worked in the past for him as well.