The positioning of Vodafone Idea which picked up modest 11.80 MHz spectrum - could potentially "worsen" as rival telcos will be able to boost their coverage and capacity after buying additional radiowaves in the just-concluded auctions, according to a report. Vodafone Idea has acquired spectrum to cover minor gaps in five circles for Rs 1,993.4 crore, while Bharti Airtel shelled-out nearly Rs 18,700 crore for 355.45 MHz radiowaves and Reliance Jio a whopping Rs 57,123 crore for 488.35 MHz spectrum.