Are there real savings in VoWiFi?

According to several sources, between 50 and 75% of mobile calls are made at home, the office, a public place or some other indoor location. Considering the current rates of 802.11 penetration in the home, office, restaurant etc, this would imply that somewhere between 20% and 25 % of calls are made within range of an 802.11 access point today. Considering the average cost of a cellular minute vs. the average cost of a VoIP call terminating off-net, we estimate that a hybrid W-Fi / Cellular solution would save operators approximately 15% in costs today. Part of the issue is that Wi-Fi penetration in the home and small business, in spite of the astronomic growth of the last 4 years, is still relatively low (between 10% and 15%). We expect the savings to quickly increase as penetration of Wi-Fi in private and public locations continues to grow at double digit rates.

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