Viber messaging app for iPhone/android?

I've got a couple of questions:
If I have an iPhone and someone has an android, will it still work?

Also, if I'm in the UK and she is in Ireland, should that work?

If it should, then it isn't. Anything I can do?

Viber between iPhone and android should work because you are connected to the same type of server and abroad connections too also work only if you have Internet connection through Wi-Fi or 3G/4G. For your third question, check that you both are connected in some way to the Internet without a bad signal if using your mobile network. That's all I can think of, hope it helps!

Yes and yes, as long as you two have viber it should work, when my sister went to japan i could still contact her through viber and now that i have an andriod i can still viber all of my friends that have an iphone

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