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Will a smartwatch with bluetooth 4.0 work with my phone which has bluetooth 4.1? - Quora
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JSAN | Free Full-Text | Security Vulnerabilities in Bluetooth Technology as Used in IoT
Will 4.1 Bluetooth headphones be compatible with an older 3.1 device? - Quora
LG Optimus F6 review: Reliable Android handset for the price-conscious - CNET
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