This part is a kind of semiconductor called AP6682.
Function of this product has Quad-band G850/G900/DCS1800/PCS1900 GPRS Front-end Module.
Manufacturers : Airoha Technology
Image and pinout :
Some of the text within the PDF file :
AP6682 Quad-band G850/G900/DCS1800/PCS1900 GPRS Front-end Module Datasheet VERSION 1.00 13-Mar-2013 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 ) Confidential For Zechin AP6682 Quad-Band GSM/GPRS Front-End Module 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 te [ ... ]