British mobile network operator (MNO) Three UK is preparing to launch a ‘multibillion-pound’ overhaul of its infrastructure, according to The Telegraph. The British broadsheet reports that, with a view to prepping for the introduction of 5G technology, Three has invited equipment vendors and managed services providers to pitch for a contract under which the winner would completely replace and run the MNO’s signalling equipment nationwide. It is claimed that such a deal would likely involve Three investing ‘hundreds of millions of pounds per year over several years’. At present, the cellco uses Samsung signalling equipment, while its network is run under managed services contracts with Ericsson and Tech Mahindra. Other companies named as possible bidders for the contract include Chinese vendor Huawei Technologies and Finland’s Nokia.