I can not connect to the internet, what happens?
Sometimes when you use a wireless network with your iPhone, iPad or iPod touch, you may find the following problems:
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Can not locate or join a nearby Wi-Fi network.
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The power of Wi-Fi signal is low or weak.
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No connection to the Wi-Fi network but can not access the Internet.
solution
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Tap Settings> Wi-Fi; disables Wi-Fi and then reactivate.
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Check if you're inside of range of your router or Wi-Fi base station.
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Make sure the Wi-Fi router and cable modem / ADSL are plugged in and turned on.
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Check if other devices (eg laptops) can connect to the Wi-Fi network and access the Internet properly.
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Upgrade the Wi-Fi router with the latest firmware
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Restart your iOS device.