After moving to Portugal from UK, and terrible experience with local telecoms provider MEO (lies and horrific bills) I have to use VOIP. Recently I’ve switched to using WhatsApp instead of Skype for most voice calls, curious if others are doing the same?? Audio Quality is mostly good and it’s much easier to find contacts than with Skype, because it’s based on their mobile number not a Skype ID. On monetisation I would pay for voice calls to landlines/mobiles. Also maybe they could do some kind of deal for international data roaming packages linked to a separate WhatsApp number. Predictable reasonable costs for voice and data - linked to a single mobile number - is still a major unsolved problem for travellers.