T-Mobile US Inc (NYSE:TMUS) released its earnings numbers for the quarter ending in September this morning before the market opened on Wall Street. The wireless carrier showed strong growth in subscribers during the period, though the company’s revenue per customer disappointed. On this morning’s pre-market shares in the company jumped by more than 3%.

T-Mobile

T-Mobile US Inc (NYSE:TMUS) showed EBITDA of $1.344 for the three months, up more than 6% from the same period last year. The company’s revenue for the three month period came in at $6.69. The net loss during the period was just $36 million, much better than the close to $8 billion the company lost in the September quarter of last year.

T-Mobile success

The big story for investors this morning is not in the firm’s better than expected revenue, it’s the one million subscribers that T-Mobile US Inc (NYSE:TMUS) added to its rolls during the third quarter of the year. The company’s earnings report showed that close to 650,000 of those adds were in branded post-paid plans.

The number of customers the company added is probably one of the biggest drivers of the gains in value this morning, though those gains have pulled back through the morning. The decline in Average Revenue Per Customer at T-Mobile US Inc (NYSE:TMUS), which fell by $1.40 to $52.20, will be considered a problem by investors in the company.

T-Mobile performance

In 2013 shares in T-Mobile US Inc (NYSE:TMUS) have added more than 70% onto their value. The company’s stock openly began trading in May after it was re-floated on the back of the merger between T-Mobile and MetroPCs. The six month gain leaves the company valued at quite a high level.

Executives from T-Mobile US Inc (NYSE:TMUS) will have a conference call later on this morning in order to discuss the company’s earnings numbers. The firm’s investors will want to hear about management’s outlook for the next quarter and their plans to stabilize or increase average revenue per customer.