The best alternatives to WhatSim are WhatsMac, Flexiroam, and esims.io. If these 3 options don't work for you, we've listed a few more alternatives below.
ChatSim lets you stay in touch wherever you are. With it, you can send messages and emojis to your friends, family and loved ones from more than 160 countries with the compatible apps like Whatsapp, Line, Kakao...