Yes, that's limitation of the iOS system. You should limit the nub of peripheral connected. If the number comes to 10, you should wait for connecting the eleventh peripheral after one peripheral disconnect. Otherwise, you cannot connect any more peripheral even if one peripheral disconnect. 在 2013-7-13，上午3:00，bluetooth-dev-request@lists.apple.com 写道：

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Today's Topics:

1. Max. no. of concurrent BLE connections (Anton Lam)

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Message: 1 Date: Fri, 12 Jul 2013 22:42:57 +0800 From: Anton Lam <anton@ideaslab.hk> To: bluetooth-dev@lists.apple.com Subject: Max. no. of concurrent BLE connections Message-ID: <CAHFzuDHfE=XddxPeGu-x1+Dq4eUnCiuA268++inedpmSKjrV_A@mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1"

Hi there,

What is the max. no. of concurrent BLE connections on IOS when it's acting as a Central?

While we're able to discover more than 10 devices, when we try to connect to the eleventh device, we never got the peripheralDidConnect call back. Then if we disconnect any of the previous 10 devices, we couldn't connect to new ones any more. From then on, Bluetooth seems to misbehave and might even restart (evident by the change of Bluetooth status from CBCentralManagerStatePoweredOn to CBCentralManagerStatePoweredOff). And this limit seems to be systemwide.

Regards,

Anton