Speedtest Data Doesn't Affect T-Mobile Data Allowance

T-Mobile has tried to attract new customers by announcing that some applications no longer affect a customer's data allowance. Now, the carrier has announced that Speedtest data is included in that offer. When you check your carrier data transfer speed through Speedtest, the resulting data usage won't affect your monthly total.

The carrier says that other speed test applications are also whitelisted in regards to data usage.