IPhone doesn't connect to any wifis?

My iPhone 4 doesn't connect to any wifis unless I'm like right next to the router! I've already tried resetting my phone &I no luck.

You need a new Wi-Fi antenna. Has you phone been worked on recently. Because there's a Wi-Fi cable that when unplugged, acts the same way. Was it maybe dropped, because that could cause the connection to come apart as well.

you'll probably have to take it to a repair shop. They shouldn't charge you more than $70.00 to fix that.

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