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蓝牙5.0是否向后兼容已存在的蓝牙4.x设备
您好，
蓝牙5.0向后兼容已存在的蓝牙4.x设备，这意味着蓝牙5.0设备可以向蓝牙4.0设备通信
您需要采取的措施有：
1.检查设备的硬件支持
2.实施兼容性协议
3.测试和验证通信连接是否稳定
