Thread: can i search on google map on my iphone or android and send the co-ordinate to garmin device?

Νο you cannot do it with the latest versions of Smartphone Link and Google Maps or Apple Maps.
Only with very old versions was possible.

Android:
Latest version of Google Maps does not Share coordinates anymore, but only the exact adrress and a "short link" for PC Google Maps
Latest version of Smartphone Link does not Share a point on its (HERE) map with with Google Maps any more.
Latest version of Smartphone Link does not accept coordinates from another program.
I used OSMand Maps to mark a point and share it to Navigon Android and it was received OK as coordinates, but when I shared it to Smartphone Link, it just opened its Here map.

iPhone:
Same things, using both Google and Apple Maps, no transfer ability to Smartphone Link from both apps..

I think this is also location dependent and the application you use:
For Android exist 2 versions:
[Only registered and activated users can see links. ] which is from Garmin
[Only registered and activated users can see links. ] which is from Garmin Corporation
As you can see from the name of the App, the second is for APAC area (and hasn't been updated for 9 months).
Due the OP lives in Singapore, the second app provides the functionality he is looking for.

Cheers
Tom