Mobile devices connect to other devices via wired or wireless connections. Wired connections are used for power and file transfer. Wireless options include NFC, Bluetooth, infrared, or 802.11 and are used for a variety of purposes, including file sharing, enhanced features (adding headphones, for example), and general networking.
Oh, hey, everybody, listen, in this episode, I want to talk about how the many ways we connect all of our wireless devices together. I'm going to be concentrating on smartphones here, but this would also work perfectly well with just about any tablet as well, so keep that in mind. So, we really have two big choices when it comes to connecting our mobile devices to other stuff, it's going to be a proprietary Apple Lightning connection, or it's going to be USB-C. So, between those three connectors, you can pretty much connect these guys into almost anything. Now, why you connect can often make a big difference. Number one, we connect for power. When that being the case, it's just making electricity, not too terribly exciting. If we're connecting to desktop systems, we might be transferring files, we might be doing synchronization, I've got a whole episode on that. What's important to us right now is, understand that we can make these connections, and they pretty much work universally. Now, one of the objectives actually mentions the phrase mini USB for a smart device. Haven't seen that in a long time, CompTIA, but I will make a mention of it. I'm sure someone's going to holler at me and go, I got this tablet from 1947 that has a mini USB. Okay, okay. The bottom line is, is that make sure you're comfortable with USB-C, micro USB, Lightning are going to be your three big types of connectors you're going to be running into, and of course, if you've got a late generation Apple product, you might have yourself a Thunderbolt connection, which looks just like a USB-C. Bottom line is, make sure you can recognize those connections. What's more interesting to me is wireless connections 'cause we can do a lot of different stuff. We've got near field communication, we've got Bluetooth, we've got something called infrared, and we've got good old 802.11, so let's go through each one of these. So, first of all, NFC, or near field communication, while we do cover that in other episodes, NFC really takes a life its own when we start getting into smart devices. Things like tap-to-print, tap-to-pay, things like that are very, very powerful tools. The only thing you really have to remember is that you have to make sure NFC is turned on. So, I'm going to get here on my Android device, and as you can see right here, it says Allow data exchange when it touches another device, right there. So, I've got it turned on. Now, you can do some pretty cool things if you've got NFC running. So, let's see here, I got a YouTube video. So, I've got some YouTube video. Now, this is a really cool YouTube video, and I want to share it with my buddy who's got this phone. Don't try this with an Apply, by the way. This is Android only. Watch what happens when I press them together. All I do is push that over, (electronic tone chimes) and now this system has the exact same page. It's a pretty convenient feature. So, NFC, the big thing to remember about that is you have to be physically very, very close together. They don't really have to touch, they just make you do that to get them close enough so that they'll actually work. Okay. Next one is Bluetooth. Now, Bluetooth, gosh, I got a lot of Bluetooth stuff, I got a Bluetooth speaker, got a Bluetooth headset, I got some very expensive Pixel earbuds here for my Pixel phone. Now, the thing about Bluetooth, more than anything else, is that you have to go through the pairing process. So, let's pair something up here real quick. So, on my Android, I got to get to Bluetooth. So, for example, in this particular case, I want to pair with this other phone, so the first thing I'm going to do is I'm going to click on Pair a new device, and there's my Nexus and it gives me a six-digit code. I'm going to hit Pair. And now these two devices are connected. The thing you have to remember about Bluetooth is, Okay, the next one's kind of interesting, it's IR, or infrared. For, gosh, the first decade of phones, most phones had an infrared, which was a line-of-sight connection just like the TV remote that you use to control your TV, and infrared was wonderfully popular. I loved it. In fact, I tortured every sushi restaurant on Earth because I kept changing the channels using the infrared capability. Unfortunately, infrared is fading out. As an option, we don't see it very often. However, if you do see infrared, particularly on the exam, remember, it has to be line-of-sight, and it's a very low-speed connection. It's good for changing channels on a TV, but not much else. The last one is 802.11. So, what I'm going to do is I'm going to use my iPhone and I'm going to make a connection to a wireless SSID. So, I go under Settings and I look up here at Wi-Fi, and you can see, right now, I'm connected to a network called totalwifi, which is the wireless network here at Total Seminars, but you see I have a bunch of other ones, too. So, it's trivial to connect to an SSID using a smart device. They all have some feature in there that shows you all of your wireless networks. Press the one you want, and make sure you have the personal shared key if it needs one, and you're up and cooking. It's that easy. Also remember, the other problem we have, this is the same problem we have with any Wi-Fi connection, is that once you connect to it, you've made a profile, and once that profile's connected, if somebody down the road, that coffee shop that you like, if they change the key, you're going to have to delete the profile and then reestablish the connection to make sure you've got the right passphrase typed in. Otherwise, it's just going to sit there and torture you. Okay. Now, if you want to get a little bit bigger than this, now it's time to start talking about cellular connections. In particular, the two big things that are really handy are hotspots and tethers. So, on this phone right here, I'm going to go ahead and let's take a look at my Tethering and portable hotspot. So, right now, you'll see USB tethering. If I turn this on, (electronic tone chiming) did you hear that? What actually taking place is this computer, this laptop right here which is connected to this phone, he now has an internet connection through this guy's cellular. So, tethering means you've got to be physically connected. Tether, like a leash, keep that in mind. The other option, let's go back here, Portable Wi-Fi hotspot. Now, I can just turn this on, and it's going to start passing out an SSID. Now, in that case, what's happening is you don't need a connection. Any device can simply tie into this device's SSID, which is called AndroidAP on this one by default, and everybody's connected, and it's fantastic. You can actually make changes. If we take a look, it says Set up Wi-Fi hotspot. So, if I wanted to, if I wanted to change the name to something a little bit more distinctive like MikesPhone, something to give people a clue, I can do that. I can even change the passphrase right here, and I'm up and cooking. So, make sure you're comfortable with the difference between hotspot versus tethering. Hotspot, lots of people can get on the internet through you, tethering, only one machine at a time. Also keep in mind is that there's always going to be some kind of airplane mode. See if we can dig up airplane mode on this device, and it's right here up at the top. See where it says Airplane mode? We turn that on, that's going to shut off my 802.11, that's going to shut off my Bluetooth, that's going to shut off NFC, anything that's making radio waves will be cut off, one nice shot. Okay. So, that's the basic concepts in terms of connecting for your types of mobile devices. The big takeaway here is, remember, you've got wired connections, and the wired connections are invariably going to be connecting to desktops, things like that, laptops, whatever it might be, that's going to be for file transfer, that type of thing. Then we're going to have wireless, and our big ones are going to NFC, remember, real close, you got to tap it, Bluetooth, keep in mind your pairing functions, 802.11, works exactly like it does on a desktop or a laptop, there's really no change, and then, if you actually have a really, really old phone, you've got infrared. (upbeat music)
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