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Most Bluetooth headsets implement both Hands-Free Profile and Headset Profile, because of the extra features in HFP for use with a mobile phone, such as last number redial, call waiting and voice dialing. The mobile phone side of an HFP link is Audio Gateway or HFP Server. The automobile side of HFP link is Car Kit or HFP Client.
The Bluetooth protocol RFCOMM is a simple set of transport protocols, made on top of the L2CAP protocol, providing emulated RS-232 serial ports (up to sixty simultaneous connections to a Bluetooth device at a time). The protocol is based on the ETSI standard TS 07.10. RFCOMM is sometimes called serial port emulation.
Bluetooth is a short-range wireless technology standard that is used for exchanging data between fixed and mobile devices over short distances and building personal area networks (PANs). In the most widely used mode, transmission power is limited to 2.5 milliwatts, giving it a very short range of up to 10 metres (33 ft).
The Samsung Galaxy S21 is a series of high-end Android-based smartphones designed, developed, marketed, and manufactured by Samsung Electronics as part of its Galaxy S series. They collectively serve as the successor to the Samsung Galaxy S20 series. The first three smartphones were unveiled at Samsung's Galaxy Unpacked event on 14 January 2021 ...
The Samsung Galaxy S8 Keyboard Cover is an accessory for the 2017 smartphone Samsung Galaxy S8 and S8+. [77] It released in early 2017 priced at $59.99, [ 78 ] The biggest criticism of the Keyboard Cover was the navigation buttons switching to default everytime you use the case. [ 79 ]
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The flagship Galaxy S24 features a flat 6.2-inch (155 mm) display. The Galaxy S24+ features similar hardware in a 6.7-inch (168 mm) form factor. At the top of the lineup, the Galaxy S24 Ultra features a flat 6.8-inch (173 mm) display, dropping curved edges. S24 and S24+ are powered by Snapdragon 8 Gen 3 in the USA, Canada, China, Macau, Hong ...
Samsung Galaxy A53 5G. The Samsung Galaxy A53 5G is a mid-range Galaxy phone developed and manufactured by Samsung Electronics as a part of its Galaxy A series. The phone was announced on 17 March 2022 at Samsung Galaxy Unpacked event alongside the Galaxy A33 5G and Galaxy A73 5G. [6][7][8] Galaxy A53 5G Phone's price is $449 for a 128 GB model ...