T-Mobile's 5G network "reliability" is the biggest problem
According to the NAD, there are a lot of good things that can be said about T-Mobile's fast-growing 5G network without misleading or outright lying to customers, but the company's "express and implied claims" that the network is "more reliable than competing 4G or 5G networks" are insufficiently supported by factual evidence.
While T-Mo essentially tried to argue that coverage and reliability are the same thing, the National Advertising Division didn't buy that explanation, recommending the carrier stop comparing its service to competitors on such a vague metric.

Interestingly, no problem was found with either Magenta's general 5G coverage or 5G speed assertions, which are considered factual and reliable. That means the mobile network operator can continue to crow about its 5G availability superiority over Verizon, as well as its speed gains compared to both its own 4G and its rivals' 4G services.
Because the NAD is no fan of hyperbole, we shouldn't be surprised that T-Mobile is also asked to modify its pompous suggestion that 5G "will change our lives in really big ways." Said hyperbolic claim was featured in an ad starring no other than Bill Nye, which also contains a misleading demonstration of the limited availability of Verizon's 5G Ultra Wideband signal that will need to be revised.Even more problems that T-Mobile intends to appeal
Clearly, Verizon filed a pretty extensive complaint with the NAD, and while the independent self-regulating division of BBB National Programs did find T-Mobile not guilty of a few of the most important accusations, the list of exaggerations and dirty advertising tricks also extends to Magenta's oft-used animated coverage map.
This gives a false impression of "universal" 5G availability when in fact T-Mobile's 4G coverage area remains significantly larger. As such, Magenta may need to modify the "execution of the challenged coverage maps" to help consumers better understand the sometimes substantial differences between 4G and 5G coverage.

Adrian, a mobile technology enthusiast since the Nokia 3310 era, has been a dynamic presence in the tech journalism field, contributing to Android Authority, Digital Trends, and Pocketnow before joining PhoneArena in 2018. His expertise spans across various platforms, with a particular fondness for the diversity of the Android ecosystem. Despite the challenges of balancing full-time parenthood with his work, Adrian's passion for tech trends, running, and movies keeps him energized. His commitment to mid-range smartphones has led to an eclectic collection of devices, saved from personal bankruptcy by his preference for 'adequate' over 'overpriced'.
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