UK mobile operator O2 is to slash international calling charges across its Pay & Go range, allowing its customers to make calls to mobiles and landline numbers from as little as 1p a minute, with ...

To highlight its International SIM offer enabling cheap calls abroad, O2 has commissioned artwork from the relevant countries, which we see as the VO explains the deal. This one for India, Pakistan ...

O2, a mobile telecommunications ('telco') brand, increased awareness of and conversion to its new international SIM bundles among relevant expatriate communities via a media-first out-of-home (OOH) ...