Thanks. Do you know if that will be better or worse on battery life? On other phones I had If you didn't have wifi on during sleep the battery life would be worse.
Edit: I just checked it out and I think it might be too much. I just wanna keep the wifi on not all applications. It also said that it prevents the device from sleeping.
Well wifi uses a lot of battery. Its normal for your device do disconnect after a while of no use. This will have an effect on your battery life.
Edit: do what you want lol
It uses less battery than 3G/4G I find if you turn on airplane mode and then turn wifi on so only the wifi radio is on. Also faster. But you have to be in range of the wifi to get any signal.