This part is a kind of semiconductor called AP6684.

Function of this product has Quad-band GPRS Front-end Module.

Manufacturers : AIROHA

Image and pinout :

Some of the text within the PDF file :

AP6684 Quad-band GPRS Front-end Module with Four UMTS Ports Datasheet VERSION 1.00 24-Dec-2012 This document is commercially confidential and must NOT be disclosed to third parties without prior consent. The information provided herein is believed to be reliable. But production testing may not include testing of all parameters. AIROHA Technology Corp. reserves the right to change information at any time without notification. ( HTTP://WWW.AIROHA.COM.TW TEL:+886-3-6128800 FAX:+886-3-6128833 sales@airoha.com.tw ) AP6684 Quad-Band GPRS Front-End Module with Four UMTS Ports This document is commercially confidential and must NOT be disclosed to third parties without prior consent. The information provided herein is believed to be reliable. But production testing may not include testing of all [ ... ]

AP6684 PDF Datasheet Download