Is your Android Smartphone only having a small memory, slow and wasteful of battery? The following tips will help you resolve the issue. Here are the tips:

Disable WiFi and Bluetooth
You can install WiFi OnOff widget. After install from the Android Market, press and hold down on the home screen, select the "Widget" and "WiFi OnOff". Enable WiFi when you really need it. To ensure you do not forget to turn off WiFi when no WiFi signal, install WiFi status. You do not have to run this application because this application will work when installed.
You also need to disable Bluetooth when not needed. Do not forget to disable the GPS, though not so important since GPS requires only battery power when running applications like Google Maps.