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what's the effect of binding to CC2540 ?

Other Parts Discussed in Thread: CC2540

Hi All,

our device has equipped with CC2540. when it is connected to one phone such as Galaxy S5 on which our APP is running, our device will be bond to the phone automatically.Sometime the device will not be scanned by the phone .The CC2540 does not broadcast. When I remove the bind , then our device  will be scanned again.

Question: If the CC2540 pair to one device  ,whether does it broadcast or not ?  Why the phone does not inform me that the CC2540 will be bond to this phone?