The gathering 5G gold rush has driven many operators towards misleading advertising in their eagerness to gain early advantage and start recouping their often huge outlays on spectrum. All the big three US carriers have succumbed to the temptation, as has Vodafone in Europe, with a number of others also having their knuckles wrapped by advertising standards authorities. T-Mobile in the US is the latest to be chastised after being enthused into unjustifiable boasts by its $26bn merger with Sprint completed in April 2020. This led to claims it had the “largest”, “best” and “most reliable” network in the country. In a split decision the self-regulatory body, National Advertising Division (NAD) of BBB National Programs, announced that T-Mobile was justified…