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T-Mobile's one-day deal hands you a second phone free

You need to purchase one Samsung Superphone (like the Galaxy S7 or Note 5) and add another phone line to qualify for the sale.

T-Mobile will offer a two-for-one deal during its one-day sale on Saturday, August 6.
T-Mobile will offer a two-for-one deal during its one-day sale on Saturday, August 6.
David Carnoy/CNET

Buy one phone, get the second free.

T-Mobile will run a one-day sale on Saturday, August 6, giving customers who buy a qualifying Samsung Superphone a second device of equal (or lesser, if you prefer) value, according to the company.

The promotion follows a week of celebrations by the company after OpenSignal and others crowned T-Mobile the fastest wireless network in the nation. You need to purchase a Galaxy S7, Galaxy S7 Edge, Galaxy S6, Galaxy S6 Edge, Galaxy S6 Edge+, or Note 5 with T-Mobile's monthly payment plan (Equipment Installment Plan) and add a second line of service to be eligible for the sale.

The deal will be available in every T-Mobile store and online, according to the company.