Microsoft Lumia 550 is now available for purchase in select market at $139 - Nokiapoweruser
Amazon.com: Microsoft Lumia 550 RM-1127 8GB (GSM Only, No CDMA) Factory Unlocked 4G/LTE - International Version No Warranty (Black) : Cell Phones & Accessories
Microsoft Lumia 550 RM-1127 8GB (GSM Only, No CDMA) Factory Unlocked 4G/LTE - International Version No Warranty (Black) : Cell Phones & Accessories - Amazon.com
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Microsoft Lumia 550 review: Microsoft announces entry-level Lumia 550 smartphone for $139 (hands-on) - CNET