do world phone drain battery faster than "local" phone?

[news]

[cellulartalk]

Some phone supports many bands with one model, like iphone. Some phone has several sub-models, each supporting the bands in a certain region. Do the phone that support many bands use more power because they are actively listening on all the bands even if not in use locally? Or are they smart...

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Courtesy of WestNet Wireless
www.westnet.ca