Unsure which Samsung Galaxy S6 storage model to buy? Well, during Memorial Day weekend, you can get a deal on the 64GB model. That is, if you’re a T-Mobile customer.

The carrier is offering the 64GB Samsung Galaxy S6 for the price of the 32GB model between May 23 and May 25, according to tech website Android Central. This means customers will pay $28.33 per month for 24 months, or $679.92 full retail, for double the internal storage if they purchase the 64GB Galaxy S6 model.

The deal is also in place for the Samsung Galaxy S6 Edge, so customers will pay $32.49 per month for 24 months, or $779.76 full retail, for the 64GB model of the curved-display smartphone.

The Galaxy S6 is available in 32GB, 64GB and 128GB internal storage options. Offering different storage capacities for its Galaxy S6 is a new move for Samsung, but the manufacturer is hoping that most customers will opt for at least the 64GB model, while trying to figure out how much storage they need. The discount should make the 64GB Galaxy S6 look much more attractive to customers, as normally it is $100 more than the 32GB model.  

Pundits and fans have complained the the Galaxy S6 does not feature Samsung’s traditional design, which includes a removable back. A removable back allows users to access the inside of a smartphone and customize it with extra internal storage via a MicroSD card or larger and more powerful batteries.

However, Samsung took a different approach, mimicking Apple’s iPhone 6 in its design, especially in implementing a nonremovable back with no expandable memory. The move should allow Samsung to earn more than it would by just offering one internal storage option. “Apple has also been structuring its iPhone offering like this for years,” IHS analyst Andrew Rassweiler wrote in a research note in April. “It boosts margins.”

The Samsung Galaxy S6 has been on the market for a little over one month, and reports say the device has sold more than 10 million units, which is on par with initial sales figures for older devices like the Galaxy S5 and Galaxy S4. The Samsung Galaxy S6 may not be the breakout hit many were expecting; it may take a few months to see just how successful the smartphone will be.