Walmart makes it super easy for AT&T customers to upgrade their phones online

Walmart has been trying to diversify its business and services in a number of interesting ways lately, competing against arch-rival Amazon in terms of both voice shopping experiences and ultra-low-cost tablets. And now you can do something on Walmart’s website that no other mass retailer selling general merchandise offers. Namely, fully complete a postpaid cell phone upgrade.

That may not sound like a big deal, but if you’re an AT&T subscriber looking for a quick and simple online upgrade, Walmart promises to save you both precious time and quite a bit of money. And …

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