Apple iPad mini 2 (7.9-inch) Tablet (A1490) GSM + CDMA - 16GB / Silver (Used) - Walmart.com
iPad 2 3G GSM & CDMA Teardown - iFixit
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for iPad2 ON Off Switch Button Volume Control Power Flex Cable for Apple iPad 2 2nd Gen GSM Version CDMA wifi version - AliExpress Cellphones & Telecommunications