Funny you should ask that.
First read this:
http://www.zggtr.org/index.php?topic=10610.msg283881#msg283881And I will quote some:
"I bought a RAM X Grip mount for my phone (which is excellent) but using a phone is horrible... no physical buttons, capacitive touchscreen is almost unusable no matter how I apply conductive thread to the glove fingers, has no autonomous mapping, has no SD card so I can't carry any more music than the old Zumo, there is no way to keep it "on", is not at all weather resistant, the volume controls are not accessible while in the mount, and the screen is nowhere near as bright."I am still experimenting- just today I discovered "Android Auto" and installed it and that looks like it will fix:
* Keeping the screen on when charging.
* Changing the interface to use larger fonts and less detail.
* Changing maps to make it more like a GPS- more visible roads, less suggestion/ad-crap.
* Easier menu for switching between music, notifications, and maps, the three things you want from a dedicated head unit.
* Integration with third-party local music apps.
* Larger dialogs.
* Auto-reply option for texts.
* Ability to use headset to control phone when screen is on (normally this isn't possible because the phone switches into a more visual mode and doesn't help much). I haven't tested this part yet.
Now, I haven't actually USED it like this yet, but I have my fingers crossed. There are still a myriad of issues- like what happens when you have no data connection, no easily accessible hardware volume buttons, issues with gloves, contrast/brightness, how screwed I am if the sucker falls off the bike, etc. But I am NOT going to drop $600+ on a new model Garmin device that now has dreadful reviews.