I am on M1 and I feel I get a higher number of wrong calls when I am travelling.
I never measure this accurately but almost for sure, every time when I travel I get one or two of these funny calls. Whereas when I am back in SGP I rarely encounter this porblem.
Do other M1 users have a similar experience?
I do not suspect M1 is doing anything funny but wonder if it would be a problem with roaming technology itself?