The Consumer Product Safety Commission warned Monday consumers should power down and stop using all Samsung Galaxy Note 7s.

The CPSC is investigating a series of fires in the replacement phones after the initial recall of the phones last month.

Samsung says it's halting sales of the star-crossed Galaxy Note 7 smartphone after a spate of fires involving new devices that were supposed to be safe replacements for recalled models.

The company says consumers with original Note 7 devices or replacements they obtained after the recall should turn off the power and seek a refund or exchange them for different phones.

The announcement follows several new incidents of overheating last week and deals a further blow to the world's largest smartphone company. U.S. consumer safety officials said they're investigating five incidents of fire or overheating since the company announced a recall last month.

Leading wireless carriers have already said they would stop distributing new Note 7 phones as replacements for the earlier recall.

“It killed me to get this phone,“ said customer Stacey Dalahite.

But, at least, her new Samsung Edge may be safer to use than her old Galaxy Note 7.

She got another model amid ongoing issues with her favorite phone.

“I took all my chargers, everything I bought in there,” Dalahite said.

Major cell carriers AT&T, Verizon and T-Mobile halted sales and exchanges of Galaxy Note 7s on Monday. They’re offering customers other models instead, including different brands.

“It just started spewing out smoke,” said Galaxy Note 7 user Daniel Franks of Houston.

He’s among the customers who say their replacement phones caught fire.

“It shouldn’t have happened because, according to Samsung, this phone is a safe phone,” Franks said.

Franks says his phone started smoldering over the weekend while he and his daughter ate lunch.

“If this would’ve been in her hand, we would have been at the hospital instead of the store trying to get it replaced,” Franks said.

Franks turned over his damaged Galaxy Note 7 to the Consumer Product Safety Commission.

It’s among those investigating the faulty phones as customers hope the company gets things figured out.

“I sure hope so,” Dalahite said.

A Galaxy Note 7 reportedly caught fire on a Southwest flight last week.

We’re told gate attendants are now warning passengers to turn off Note 7s before boarding and to refrain from charging them on the plane.

Experts suggest you replace any Galaxy Note 7 as soon as possible.