Dual tape
One understands by dual tape of mobile phone this send and conceive on two frequency. These mobile phones are to be used therefore in the situation the D net by Vodafone and T-Mobils with 900 Mhz as well as the E net of Eplus and O ² with 1800 Mhz and also to serve.
You can use dual tape of mobile phone in whole Europe as well as in some parts of Africa. In the USA and Asia they need a Triband or even a Quadband mobile phone.
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