T-Mobile (Nasdaq: TMUS) shares jumped higher Wednesday after the country's third-largest wireless carrier posted stronger-than-expected first quarter earnings and boosted its full-year outlook for adding new users that pay a monthly bill as it ramps-up its 5G challenge to Verizon and AT&T . T-Mobile said diluted earnings for the three months ending in March were pegged at $74 cents per share, down 32.7% from the same period last year but well ahead of the Street consensus forecast of 57 cents per share. TMUS shares stand close to a very critical resistance at $135,54.