This article describes how to Optimize the Wi-Fi signal strength.
INSTRUCTIONS & INFO
From the home screen, tap Wi-Fi.
Set Wi-Fi Range to Extend Range to optimize signal strength. Note: Standard defined as approximately 145ft and Extended is approximately 160ft. Please also caveat that range can be affected by interference caused by surrounding objects.
Enable Dual-Band Wi-Fi to minimize signal interference.
If you are using a version of Microsoft Windows OS certain Wi-Fi adapters and TCP settings may interfere with your ability to receive optimized data speeds. To ensure optimal performance TCP size should be set to 1M or larger. If you are still unable to receive optimized data speeds after changing TCP size, you should consult the manufacturer of your Wi-Fi adapter to determine whether it is compatible.