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Now let's look at the WiFi settings. As I mentioned in the first chapter, your device will remember networks you've previously connected to and automatically reconnect to them. This is a convenience so you don't have to constantly go through a series of menus to connect to a network you've already been on. If the WiFi network has a unique name this is just fine, but if you're guilty of leaving your WiFi router's name at its default setting. For example you can almost be certain to find multiple WiFi networks with names like Linksys, or even wireless. Your iPhone won't be able to tell the difference between one WiFi network named wireless and another, and will happily connect to any router with that name whenever you're within range of one.
In some cases that will be okay and you'll just end up leeching off someone else's network with the same name. But occasionally, your device will connect to an identically named WiFi network that has other settings which might not let you connect to the internet. Even though it allowed you to connect to the WiFi network itself. In those cases, it can be confusing when you see that your device is connected to the network while being completely unable to open a web page, check your email, or connect to the internet in any way. If you run into this problem, open your WiFi Settings and check which network you're connected to. You might recognize a network name identical to the one you normally connect to at home or elsewhere.
If one's available, select a different network and try getting online again, but another option is to type the blue i button next to the network that's giving your problem. So, if you're used to connecting to a WiFi network named wireless at home, and while on a trip you run into another network named wireless that your iPhone keeps connecting to, tap Forget This Network. And then tap Forget. Now you'll you have to reconnect to your own network again once you get home, but at least your phone won't automatically keep connecting the wrong one while you're on your trip. Another scenario in which you might find it useful to forget a network, is if you've ever paid for WiFi in a public place. For example, in some businesses like hotels and coffee shops, you have to first connect to a WiFi network, which then redirects you to a page where you have to enter a credit card number to purchase access time.
If you do this one time in one hotel. The next time you are in the same hotel or even in another property from the chain that has the same WiFi network name, your device will automatically connect to that network and you will be unable to access the internet without paying again. But if you are on an iPhone and just want to the cellular network to quickly check your email. You want to go into your WiFi settings and tap Forget This Network to make your phone stop trying to connect to it. Or alternately you can just turn your WiFi off, which will make your internet connection default to your cellular network. Another behavior you might find annoying when you're out and about with you device is that it might always give you a list of nearby WiFi networks anytime you try to do something that requires an internet connection.
This can be especially annoying when you're in a major city where there are dozens of WiFi signals everywhere and most of them locked and unavailable. And having your iPhone ask you to join one of these networks each time you try to do something Internet related can really get annoying very quickly. In those cases go into your WiFi settings and make sure Ask to Join Networks is off. That way your device will still connect to any networks it recognizes but it won't keep bugging you to join other networks it detects. So, those are just some things to understand about your WiFi settings.
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