How To Make Free VOIP Calls From Android or Iphone

VOIP means Voice Over Internet Protocol which is used to transmit  Voice calls over Internet. There are many applications which can serve the purpose but the only requirement is that both the phones should have same application installed and Internet connectivity (preferably Wifi or 3G). Here are the few applications that can be used on your Android or iOS device to make VOIP calls absolutely free of cost.

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