If you're experiencing inconsistent wireless network connectivity on your iPhone 6, substituting the upper Wi-Fi antenna is a possible solution.
Carefully detach the Wi-Fi antenna assembly from the iPhone.
To prevent conductivity issues caused by oils from your skin, avoid direct contact with metal-to-metal interfaces; instead, utilize tweezers or gloves. Should contact occur, thoroughly clean those areas with a degreaser, such as Windex or isopropyl alcohol, prior to reassembling the device.
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