5 different SIM cards in three different countries
I’m glad it worked for you. The doesn’t mean it worked for me. Why it lost it’s login data I have no idea but it asked me to re-verify through SMS which only works if the sim registered to that SMS # is in the phone. FB Messenger doesn’t have this problem because your account is not tied to your phone number.
being able to group chat internationally and between Android and iPhone is worth it.
pretty much every messaging app provides that feature so that’s not a plus for WhatsApp. FB Messenger provides even more since you can use multiple devices including PCs so you can group chat internationally between Android, iPhone, Windows Phone, iPad, Windows, Mac, and Linux.