The UK's Advertising Standards Authority is expanding an investigation into Apple's marketing of the third-generation iPad in the country, the BBC reports. The ASA says it has received dozens of complaints regarding Apple's use of the term 4G in UK marketing; while the new iPad does support 4G, the option so far works only in Canada and the US. The BBC has allegedly learned that the ASA thinks Apple hasn't complied with an agreement to change its UK advertising.