The cost to build out new LTE networks is prompting some operators to consider network-sharing deals, but cultural disagreements and network integration problems can present challenging hurdles, according to Dimitris Mavrakis, principal analyst at Informa Telecoms & Media, who was cited in a telecoms.com article. Vodfone and O2 recently entered a network-sharing arrangement in the United Kingdom, as did Telia and Telenor in Denmark, but such deals don't always have happy endings. Mavrakis cited a case in which it took several months of meetings before two operators could even come to terms on cultural issues. Article.