Refresh WiFi iPhone every few minutes

[marktheknife]

@rlithgow1

You need to turn off anything on the iphone that puts it in low power mode to keep the radio awake.

Not possible, as far as I know.

iOS will disconnect from WiFi if the phone is sitting idle after ~10-15 minutes, and no combination of settings can change that.

The developer of the iPhone WiFi presence sensor recommends against using it alone for exactly that reason.

From the thread I just linked to:

@jwetzel1492

Note: iPhones can put their WiFi to sleep, so you should not use this as your only way of detecting presence. However, it can be used to augment other presence sensors. Interpret results this way:

• If this sensor shows "present", the iPhone is DEFINITELY present.
• If this sensor shows "not present", the iPhone may or may not be present. We don't know.

It’s only useful as one component of a mobile presence solution. Like with his combined presence app.