T-Mobile CEO John Legere is stirring things up on Twitter once again, railing on Amazon for reportedly striking an exclusive deal with his competitor AT&T to power the e-commerce company's expected smartphone.

Legere was at it all day Wednesday, following a report from the Wall Street Journal that AT&T would be the only carrier to provide service for the new device.

"Whew! @Amazon doesn't know what they just signed up for. Remember the Facebook phone? #yikes," he tweeted it, referencing HTC and Facebook's deal with AT&T last year.

The HTC Facebook phone was a bust, despite AT&T vowing to feature it prominently for the season. But, the phone's sales were not up to par and after a few short weeks, AT&T slashed the phone's price down to 99 cents.

Legere is known to spur controversy on Twitter and beyond. Branding his company as an unconventional carrier that is shaking up the industry standard of contracts and data plans, the CEO often takes on the persona of a rebel. Wednesday's rant about the reported Amazon-AT&T deal had him tweeting up a storm. He even dinged the Seattle-based Amazon for choosing AT&T over T-Mobile, which is also based in the port city.

Exclusivity sucks for customers. Exclusivity on @ATT sucks for the industry. #justsayin — John Legere (@JohnLegere) June 17, 2014

Let's hope @amazon doesn't fall victim to the @att curse that is the facebook phone. #onemonth — John Legere (@JohnLegere) June 17, 2014

Legere no doubt wants to drum up some buzz for his company's own event, scheduled for Wednesday night, following Amazon's product launch. T-Mobile actually moved its event from Los Angeles, to its hometown of Seattle after Amazon announced its event date, in fear that media outlets wouldn't send reporters to both locations.