"Homezone is based on a standard GSM cellular phone only, no cordless equipment is required or used. While you are on the road, you can make phone calls with your mobile phone as with every mobile phone, also you are available under the o2 mobile number. Outbound calls are charged with the normal tariff, which is, more or less equal, too the other mobile tariffs, available from other operators.
However, if you enter your "Homezone", an area which you can define within the o2 coverage and which is att least 500 square meters, your outgoing mobile phone calls will be charged with a fixed net equal tariff. But it's even more: in addition you get a fixed net phone number like for Munich "089-2500 xxxx". This means for everyone who wants to call you, that they can use the cheaper fixed net number instead the mobile phone number."
To know when you are in your homezone, the phone displays a little home icon in the top left, where you normally find the date on other ROMs.
Hope that clarifies things a bit.
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