SoftBank to unleash its lowest mobile rates in race with Docomo

TOKYO -- Japanese telecom company SoftBank Corp. will launch a wireless plan in March offering 20 gigabytes of data for 2,980 yen ($29) per month, matching a recent move by market leader NTT Docomo.

The package to be announced Tuesday will be SoftBank's cheapest package, costing less than half as much as the company's 8,480 yen 50 GB plan.