This post is to help you find out which CPU is in your Note 4 and which markets it will work.

Samsung has made a variety of versions of the Note 4 (nominally called N910) each with a letter at the end which determines the exact model. Please use this post to determine which model you should buy for the 3G or 4G services to work in your country and carrier, or to get that specific Octacore Exynos CPU or with the Quadcore Snapdragon.

To check the version you have go to “SETTINGS” -> “ABOUT DEVICE” and scroll down to “MODEL NUMBER” and it will be something along the lines of “SM-N910??” – where the ?? represents the letter or numbers determining the exact model.

SM-N9100(Qualcomm Snapdragon 805)——[China]——{SIM1:TDD-LTE+FDD-LTE+WCDMA+TD-SCDMA+GSM;SIM2:GSM} 【Firmware:N9100ZCU1ANIF】

SM-N9106W(Qualcomm Snapdragon 805)——[China Unicom]——{TDD-LTE+FDD-LTE+WCDMA+GSM;SIM2:GSM} 【Firmware:N9106WZNU1ANIF】

SM-N9108V(Qualcomm Snapdragon 805)——[China Mobile]——{TDD-LTE+TD-SCDMA+GSM;Roaming:FDD-LTE+WCDMA} 【Firmware:N9108VZMU1ANIE】

SM-N9108W(Qualcomm Snapdragon 805)——[China Mobile]——{SIM1:TDD-LTE+TD-SCDMA+GSM;SIM2:GSM;Roaming:FDD-LTE+WCDMA} 【Firmware:N9108WZMU0ANGH】

SM-N9109W(Qualcomm Snapdragon 805)——[China Telecom]——{SIM1:TDD-LTE+FDD-LTE+CDMA;SIM2:GSM;Roaming:WCDMA+GSM} 【Firmware:N9109WKEU1ANIE】

SM-N910A(Qualcomm Snapdragon 805)——[USA AT&T]——{FDD-LTE+WCDMA+GSM}

SM-N910C(Samsung Exynos 5433)——[Asia,Europe,South America]——{FDD-LTE+WCDMA+GSM}【Firmware:N910CXXU1ANIF】

SCL24(Qualcomm Snapdragon 805)——[Japan AU]——{FDD-LTE+WCDMA+CDMA+GSM} 【Firmware:SCL24KDU1ANIK】

SC-01G(Qualcomm Snapdragon 805)——[Japan Docomo]——{FDD-LTE+WCDMA+GSM} 【Firmware:SC01GOMU1ANIK】

SM-N910F(Qualcomm Snapdragon 805)——[Europe]——{FDD-LTE+WCDMA+GSM} 【Firmware:N910FXXU1ANIE】

SM-N910FD(Qualcomm Snapdragon 805)——[United Arab Emirates]——{SIM1:FDD-LTE+WCDMA+GSM;SIM2:GSM}

SM-N910FQ(Qualcomm Snapdragon 805)——[Turkey]——{FDD-LTE+WCDMA+GSM}

SM-N910G(Qualcomm Snapdragon 805)——[Singapore,Sri Lanka,India]——{FDD-LTE+WCDMA+GSM} 【Firmware:N910GDTU1ANIE】

SM-N910H(Samsung Exynos 5433)——[Asia-Pacific]——{WCDMA+GSM}【Firmware:N910HXXU1ANIF】

SM-N910K(Samsung Exynos 5433)——[Korea KT+]——{FDD-LTE+WCDMA+GSM}【Firmware:N910KKTU1ANIF】

SM-N910L(Samsung Exynos 5433)——[Korea LG+]——{FDD-LTE+WCDMA+GSM} 【Firmware:N910LKLU1ANIF】

SM-N910P(Qualcomm Snapdragon 805)——[USA Sprint]——{TDD-LTE+FDD-LTE+WCDMA+CDMA+GSM} 【Firmware:N910PVPU1ANIE】

SM-N910R4(Qualcomm Snapdragon 805)——[USA US.Cellular]——{FDD-LTE+CDMA} 【Firmware:N910R4TYU1ANIG】

SM-N910S(Samsung Exynos 5433)——[Korea SKT]——{FDD-LTE+WCDMA+GSM} 【Firmware:N910SKSE1ANIF】

SM-N910T(Qualcomm Snapdragon 805)——[USA T-Mobile]——{FDD-LTE+WCDMA+GSM} 【Firmware:N910TUVU1ANIG】

SM-N910T1(Qualcomm Snapdragon 805)——[USA T-Mobile]——{FDD-LTE+WCDMA+GSM}

SM-N910U(Samsung Exynos 5433)——[HongKong,Taiwan,Australia,New Zealand,Chile]——{TDD-LTE+FDD-LTE+WCDMA+GSM} 【Firmware:N910UXXU1ANIF】

SM-N910V(Qualcomm Snapdragon 805)——[USA Verizon]——{FDD-LTE+WCDMA+CDMA+GSM}

SM-N910W8(Qualcomm Snapdragon 805)——[North America]——{FDD-LTE+WCDMA+GSM}【Firmware:N910W8VLU1ANIG】

SM-N910X(Qualcomm Snapdragon 805)——[Demo Test]——{FDD-LTE+WCDMA+GSM}【Firmware:N910XZCU1ANI6_LLK】

Reference: http://forum.xda-developers.com/note-4/general/galaxy-note-4-versions-cpu-t2883741