Mobile devices are surprisingly self-maintaining these days but there’s a few issues that come up occasionally. A big part of this is understanding the names and functions of certain setting unique to smartphones.
Well, what do you do to actually maintain this device? an Apple device, not much. Apples are pretty good at maintaining themselves. If you have an Android there's a few things you need to take care of, but whether you have an Apple or an Android there is one thing that's always going to be the same, It's really easy to tell the difference. GSM phones come with a little SIM card and if you get a GSM phone, you usually got to get a little SIM card and they have to put that in and then you can actually use the phone. With the CDMAs, they didn't come with a SIM card. Now, if you're watching me in Europe or in Africa That's because if you're other than the North America and some of South America you'll never, ever, ever see CDMA phones. However, stuff about CDMA is mentioned on the exam. So, I'm going to cover that in here as well. The big challenge you have with CDMA phones is that there's lots of stuff that needs to be updated, and the big magic word here is firmware. Now, there's no hard drive in here, So, we store it on ROM and that's firmware, and sometimes it has to be updated. You've got what we call baseband updates, which is going to be some of your cellular stuff. We've got broadband updates. We've got radio updates for Wi-Fi and all these things, pretty much magically, with a few exceptions that we're not going to worry about. One issue that you do see with CDMA phones The PRL is your preferred roaming list, if you're suddenly noticing that your texting is running slow, or your phone calls are taking forever to connect, you might want to consider updating your PRL. Now, how that's done depends on your carrier, but it usually consists of getting on the phone and dialing something like *228 or something like that, and the updates will be taken care of for you auto-magically. PRL is a part of what we call the product release information, or PRI. This is a big chunk of updates that hit all at once on CDMA phones and the only time you have to worry about this is if you're having trouble connecting, if things are going slow, or if you're in a new place you haven't been before and suddenly you can't make any foreign connection. Usually just updating your PRL will take care of that for you. But when it comes to all of this updating that comes in, you really, if you're in the world of GSM phones, that doesn't happen because pretty much all phones are designed to have updates sent to you. Now, the one choice you can make is whether you want to have it automatically update or not, and you're going to have to go in, Android and iOS are different on this, but they still will have something that says do you want to update automatically or do you want to have an update come in and then you manually go through the updating process? I don't even think about it, and I'm not saying I've never had problems, but it's been an extremely rare issue. So, if you're talking about OS updates, if you're talking about patching, if you're talking about firmware, when it comes to smart devices it's all the same thing. It's just an update, and go for it. Now, there's a couple of other numbers that you run into on phones and I want to make mention of them. One of them is called the IMSI, the International Mobile Subscriber Identity, and the other one is IMEI, International Mobile Equipment Identity. I want to show you both of these settings on a phone. Now, the first one I want to show you is IMSI. So, I actually ran a program here called SIM Data Reader. So, IMSI is actually built into the SIM itself. You see this number here that starts with a three, the rest of it's fuzzed out? that's really all you're doing to get it up and cooking, charge you, and you can pay your bill every month. Now, the other one, interestingly enough, I'm throwing this in here, 'cause CompTIA did, and that's the idea of VPNs. Now, we have an entire episode that talks about VPNs, but VPNs work perfectly well on phones, just as well. So, if you want to set up a VPN and here on my, on this Android it's under Advanced, and you'll see here's a VPN. Now, as I click on this I'm going to hit a plus sign, Mike's VPN, and I can set the VPN type I want. You can see that Android has a fairly limited number of different types of VPN, but here's the important one. Make sure you know the IP address of your server. Now, I'm making these numbers up. So, don't try to use them. But without knowing your server's IP address, you're never going to get VPN to work. Also keep in mind that pretty much all of the better quality VPNs, they're not going to use the built in VPN client that comes with your phone. They're going to go ahead and install their own VPN client that has a lot more flexibility for it. But the important thing is even those clients set up what type of VPN it is, and make sure you have the server's IP address. Remember those three, you'll get through the A+ no problem at all. Okay, the next thing I want to talk about is the idea of remote backups. Now, we did kind of touch that in other episodes, but let me at least make quick mention of it. Both Android and iOS are amazingly good at doing backups. They're either going to back it up to Google Drive if it's Android or iCloud if it's iOS. The only thing I need to remind you is this one thing, turn it on. (laughing) If you turn it on, it's going to work beautifully, and the level of auto-magic-ness is absolutely impressive. All right, so now I'm going to split things up a little bit between iOS and Android, and the term I'm going to use is antivirus. You can have antivirus or anti-malware installed on both iOS and on Android devices. However, the general consensus is because of Apple's tight control on their stores it's not really necessary, and to be honest with you I'm unaware of any Apple person who has installed an anti-malware on their phone, and if you go on the store you can see and people who like to play dangerously. Now, that's different on the Android devices. Android devices change things a lot. In particular, the idea of the store is going to be a trusted source of software. So, whether you're on iOS going into that store or you're in Android going into the other store, you have a high degree of confidence that you can go on, install these, without fear of malware However, with Android devices you don't have to use the store if you don't want to. Let me give you an example. So, here's some program that I wanted to install. So, if I hit Download, notice that I'm going to get this big warning. What it's trying to install are these files. If you look very closely you see .APK. That's just a Android installation file. I'm not in the store here, folks. I'm just grabbing some arbitrary website, and because Android is all about freedom you don't necessarily have to install from untrusted sources. However, by the way, most Android devices could be configured in such a way where you would prevent them from doing this. Mine's wide open because I like showing you guys cool stuff. So, make sure you're aware of the idea that inside the store versus outside the store, inside is trusted, outside is untrusted. So, if you're going to be dealing with untrustworthy things, Host based firewalls are as important However, again, because of Apple's strong control as it is on an Android device. of third party firewalls that can do an excellent job. But even then, if you're the type of person the chances of you needing anti-malware
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