hey you can only download skype on phones if they are from the network three, and also if they are a 3g phone, plus it will be commpletely free to download it and also call other people on skype. and for laptops and pcs it depends how good your network is and the windows make try this link
http://www.skype.com/intl/en-us/get-skype/, also here's a suggestion of a phone for skype, skype phone s2x , hope this helps, :) ,xx
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