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If you can access the Wi Fi through an access point other than your own, you know your card is good, otherwise, troubleshoot reasons why your connection might not work below. You may find that this causes all your internet connections to slow down. DNS and IPv6 are customery settings in your Network System Preferences, and your router setup which may get messed up or need refreshing with new settings, as internet service providers address these settings differently. One user named mreckhof on Apple Discussions found that changing the MTU by going to Applications - And quitting the Terminal application solved a lot. The problem is that ascii characters are 7 bits plus a parity bit. Third party routers and PCs notice that hex key a lot more often. MTU = also known as the minimum transmission unit is controled at the system and router level and can affect the stability of your connection.
They need to be made aware of what issues you are having, especially if the solutions below don't seem to help. Which could conceivably allow you to delete files you don't want to delete. Many routers slow down their internet connections simply by using the built-in logging mechanism for errors. Changing the MTU, whether by editing the router control panel or going to the command line can frequently solve dropped connection issues. Assuming your data you are transferring is regularly of a certain size the MTU may cause a bit of a lag in what gets transferred.Whether you're on your first smartphone or your seventh, settings are or will be one of your best friends.Settings help you protect your privacy, save on battery life, silence notifications, and can make your device easier to use.