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android(4.4.4) can not connect to CC2560 with BLE 4.0

Other Parts Discussed in Thread: CC2560, CC2540

Hi all:

    Recently, when I use CC2560, I find some phenomenons very strange.

   When I use android(Samsung  S6,  4.4.4), the android can discovery the advertisement, but I can not connect the CC2560 with BLE 4.0, only can connect it with classic bluetooth, but I can connect the CC2560 with BLE4.0 in IOS. 

    I am very sure the app of android is right, because the app of android can connect CC2540 very quickly.

    So , Is there any example of android which can connect to CC2560??

    From the datasheet of CC2560, it can compliant with the classic bluetooth and BLE 4.0, can it work either in classic mode or ble 4.0  mode? Can it work in classic mode and ble 4.0  mode  at the same time??

Best Regards