T-Mobile's prepaid unit unveiled four new plans on Tuesday that provide a five-year price guarantee and monthly charges as low as $25 per line, as the company seeks to shield its market share from competition amid economic uncertainty.

T-Mobile talks a big game about hundreds of dollars in added value, but for most consumers it's a lot harder to see how any of it matters.

T-Mobile tips new Experience More and Experience Beyond plans that replace Go5G Next and Go5G Plus. There are also four new Metro by T-Mobile plans.