
Are the following mentions coreferent?:
<m> announced </m> in T - Mobile USA Announces BlackBerry Q10 Availability T - Mobile USA announced that the BlackBerry Q10 smartphone device will be added to its growing 4G LTE smartphone portfolio.
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<m> announced </m> in T-Mobile has announced it will be carrying the BlackBerry Curve 8900 smartphone this February, although it will not offer 3G data service. U.S. mobile operator T-Mobile has officially announced it will be offering the BlackBerry Curve 8900 smartphone this February. T-Mobile has not revealed an official release date or pricing information for the BlackBerry Curve 8900, although the unit will work with T-Mobile's unlimited HotSpot Wi-Fi based calling service. 