At what hours do they sell electronics at this location? Can one get a T-mobile sim card there as well?

You can buy at Walmart, and if you do not like it, give it back and get your money back.

Bought it at Walmart! YES AT & T, for $ 39. 30 days, unlimited links, text and 9gb data. Simple activation, made by browsing the cell itself and you can still monitor the data. Detail that plan is Walmart's partnership with AT & T, called Walmart Family Mobile.

Thiago... I buy a generic sim card there. Spend 49 US$ and u can use with any carrier... I use with T and works very well.

At the Mall at Milenia there is a T-mobile store, which is special for tourists for $ 30, unlimited. Worth it more. At Walmart you buy, but you have to turn around to register, at T-mobile they do everything for you.

Thanks for the tips, everyone!