AT&T said that they are prepared to invest an extra $2 billion on network upgrades to $18 or $19 billion, up from $17.3 billion last year.  AT&T said its primary focus is to help improve their wireless network around 26 of the major cities in the U.S. for customers. ...[img]http://feeds.feedburner.com/~r/neowin-software/~4/4FS2XIdD5lY[/img]

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