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AT&T Mobility is supporting the Power Matters Alliance, a wireless charging standard spearheaded by Powermat Technologies and Procter & Gamble for wireless charging. AT&T wants handset partners to support the PMA standard. AT&T and Starbucks joined the board of the PMA in October, 2012.

Meanwhile, as CNET explains, the PMA effort is competing with Qi, backed by the Wireless Power Consortium.

It’s used in high-end smartphones like the HTC Droid DNA, Nokia Lumia 920 and Samsung Galaxy S4.

A third contender is the Alliance For Wireless Power, or A4WP. Formed in May 2012, A4WP is backed by Qualcomm and Samsung. A4WP says other wireless power designs require precise alignment and close physical contact, unlike their approach. The group still needs to finish testing and certification. A commercial rollout isn’t expected until next year.

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