How to avoid wifi disconnections using Walkie-Talkie

On your Android phone:

For Android 2.3 and earlier

1) Navigate to Menu > Settings > Wireless & Networks > Wi-Fi settings> and select the menu button again.
2) You’ll be prompted to either scan or select advanced. Select “Advanced”
3) Select “Wifi sleep policy” , and you will have a couple of options to select from. Choose “Never”.

For Android 4.0 (Ice Cream Sandwich) and later:

1) Navigate to Menu > Settings > WiFi and select the menu button again.
2) Select Options, Advanced
3) Set “Keep WiFi on during sleep” to “Always”