Samsung Galaxy Tab 10.1 Wifi - Tablet - Android 3.1 honeycomb - Gt-p7510mayxab - Answered Questions & Fixed issues
How come sometimes my screen works real slow, or not at all. but when I restart it the screen works gust fine,
You might have too many apps or you might have too many apps that are active in the background that are slowing your tablet down. Uninstall unused apps or turn them off through settings. Apps always sync in the background, even when you don't use them. When too many apps are running at the same time, they drag down the wifi speed. Go to Settings>Wireless and Networks> Data Usage, view all the apps that are actively syncing. Also, in Settings>Device>Battery, you'll see which apps are actively draining your battery (if this is also an issue). You might be surprised which apps are either draining your battery or always syncing.
When accessing the internet on tablet the `Unfortunately, internet has stopped` message appears even though it is showing that wifi is connected
Verify that your router has a good internet connection and that its local IP service (usually through DHCP) is running. Try entering the router's TCP/IP address (e. g., http://220.127.116.11) in your browser's address bar to see if you can get the router's status page.
One of the more common failures in older routers is IP service dropout, particularly if the router overheats because something was stacked on top of it. This will result in client error messages such as the one you describe.
Another possibility is an authentication failure, but that would generally mean somebody messed with the wireless network access password, or there's a bug in the wireless coding (as in some ASUS laptops - this was fixed in a firmware update).
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