AT&T extends wait for phone upgrades from 20 months to two years

Following Verizon's lead, AT&T has extended the period customers will have to wait before upgrading their phones. The company announced in a blog post that it was raising the threshold for a subsidized replacement from 20 months to 24 months. That new limit applies both to new customers and to anyone whose contract ends in March 2014 or later -- meaning most people currently on a contract will get one more 20-month upgrade before the change takes effect. As always, customers can buy unsubsidized...