At the meeting held in Birmingham and attended by as few as 400 shareholders, 4.3bn shares were in favour of the demerger, with only 670,000 against.
BT now needs regulatory approval for the deal before trading in mmO2 shares can begin on November 19. Goldman Sachs has said investors can expect to pay around 70p a share when trading begins.
mmO2 is the parent company of BT Cellnet, which is being rebranded as O2. The company has hired Abbott Mead Vickers BBDO to handle a £150m pan-European launch of the brand. The change to the O2 brand is expected to be completed by spring 2002.
mmO2 is also the parent of Genie, the mobile internet business, as well as European mobile brands Telfort and Viag Interkom and Irish mobile operator Esat-Digifone.
At today's EGM, Sir Peter Bonfield, CEO of BT, said that mmO2 would be operating in "the high-growth mobile market [and] should be a growth stock". However, analysts say it will be high-risk investment in a competitive market.
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