This post was published 1 year 10 months 23 days ago which may make the App / Game or info outdated. It is best to check the developers site to see if there is an updated version.

SpeakerPhone – Auto On v1.02 will automatically turn on your speakerphone. While the application is running, when an incoming call is received, the speakerphone of your device will automatically turn ON when you receive the call.
You can also automatically activate the speakerphone when you are making an outgoing call by checking the Outgoing ON in the menu.

It should work on smartphone and PocketPC WM5/WM6

Change Log v1.02

- USB only : option to turn on speakerphone ONLY when synced or charging

Change Log v1.01

- Auto answer on/off
- Delay options before auto answer

NOTE: before executing the application, create these STRING values first using a registry editor :

HKCU\Software\SpeakerPhone\Auto with value = 0
HKCU\Software\SpeakerPhone\Delay with value = 5000
HKCU\Software\SpeakerPhone\USB with value = 0

Source : xda-developers.com

SpeakerPhone 1.02
Older Version : SpeakerPhone v1.01

Tags: auto answer, freeware, PocketPC, PPC, registry, smartphone, Speaker Phone, SpeakerPhone, Windows Mobile