Improve your Mobile Device WiFi Signal
Move your router closer to your device to improve signal strength.
Disconnect your mobile device from the wifi network.
Limit the amount of devices sharing your WiFi network.
Raise your router. The height of your router may improve its radio signal performance.
Ensure there is no WiFi interference. Here are a few examples: Cordless phones, baby monitors, microwave ovens, etc. To fix, move these items away from your wireless router.