Why does wireless Android Auto use both Bluetooth and Wi-Fi?

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You get successful nan car, move it on, and your telephone conscionable connects to your intermezo system. Wireless Android Auto launches automatically connected nan dashboard and you're bully to go. No cable. No fumbling to plug thing in. You don't moreover person to excavation retired your telephone from your container aliases pockets. But here's thing astir drivers don't realize: nan "wireless" acquisition of Android Auto really requires moving 2 abstracted connections astatine nan aforesaid time: Bluetooth and Wi-Fi.

Why both? That's a bully mobility and nan short reply is that neither exertion tin do nan occupation alone.

Bluetooth handles 2 circumstantial jobs erstwhile it comes to wireless Android Auto: nan first handshake betwixt telephone and car and hands-free calling. The handshake is what kicks disconnected nan full process. Bluetooth, arsenic a technology, is energy-efficient and low-power, truthful your telephone tin scan for your car's strategy successful nan background, brace nan two, and speech nan credentials needed to motorboat a Wi-Fi connection. The only point you person to do is to move connected your car.

Handling hands-free calls is Bluetooth's 2nd occupation successful your car. Android Auto routes audio done your car's speakers utilizing nan Hands-Free Protocol. If you disable Bluetooth during your thrust for immoderate reason, it simply kills nan connection. For these 2 reasons, you can't tally wireless Android Auto without Bluetooth.

As mentioned, Bluetooth besides launches a Wi-Fi connection. So, why does Android Auto move connected Wi-Fi? Because Bluetooth tops retired astatine astir 2-3 Mbps of information throughput. That's capable for audio alone, but decidedly not capable to watercourse a high-resolution representation interface, audio and touch inputs.

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Once nan Bluetooth handshake is complete and your instrumentality is paired to your car, your telephone connects to a local, peer-to-peer 5GHz Wi-Fi Direct network. This is wherever nan magic happens. Wi-Fi Direct provides nan bandwidth needed to grip everything other from nan personification interface to high-quality audio from your streaming services, and nan sensor data (GPS details, odometer, touch inputs connected nan screen, sound commands, ambient light, etc).

Google's Android Auto developer documentation intelligibly states that nan 5Ghz Wi-Fi request is strict because modular Bluetooth lacks nan bandwidth for continuous video projection. That's besides why older telephone models without 5GHz Wi-Fi support simply can't tally wireless Android Auto.

Many vehicles (mine included) only support wired Android Auto. Thankfully, location are plentifulness of dongles disposable to purchase, specified arsenic nan Carlinkit, AAWireless, and nan Motorola MA1. These span nan spread by utilizing nan aforesaid Bluetooth and Wi-Fi logic, conscionable pinch an other layer.

You plug this mini dongle into your car's USB larboard and it mimics a wired smartphone. The dongle past pairs pinch your telephone complete Bluetooth, establishing a information connection. Your telephone past drops nan Bluetooth information nexus and connects to nan dongle complete 5GHz Wi-Fi Direct earlier translating that Wi-Fi watercourse into nan USB signal. As acold arsenic your car knows, you're moving pinch a modular wired connection. It's an easy hole that won't costs you a fortune.

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Using wireless Android Auto is surely convenient, but location are immoderate downsides. First of all, some Bluetooth and Wi-Fi must enactment connected arsenic turning disconnected either of them breaks nan connection. Maintaining an progressive 5GHz Wi-Fi relationship connected apical of GPS and Bluetooth tin decidedly drain your device's battery. On apical of that, if you're utilizing a dongle, it tin adhd a relationship delay. You'll besides request to person a telephone pinch 5G capabilities that is moving Android 11 aliases newer.

Ultimately, wireless Android Auto useful truthful smoothly because Bluetooth and Wi-Fi each grip nan portion of nan occupation they're champion suited for. When you cognize what happens down nan scenes, it whitethorn sound complicated, but nan consequence is worthy it.