I installed Garmin XP on Sprint Diamond and it works great.
Here are the comparision between google map and Garmin:
Garmin:
- Requires large space due to map ( I select only costal states and it took 500MB in internal storage, plus 6MB of device storage )
- Lock Sattelite is faster than google
- Has great Text to speech but no street name as Garmin 350 does.
- Point of interest such as Gas, Gas price, airport, etc
- Not require internet unless you want gas price, weather, etc
Google:
- Sattelite view is awesome. you can see roof of your house.
- Lock sattelite is slower but less a minute.
- require internet and data usage is alot (not good with sprint 5GB cap)
- not easy and user friendly like garmin
- no point of interest, no arrival time, no speed limit, no turn signal, no text to speech; garmin has all of these plus more.
- use alot of battery since it constantly download map data
- if you're in an area without 3G signal, you're lost
- if you're going north, it shows that you're forward. but if you're then going south, the arrow goes toward you
I had to turn the phone 180 degree in order to feel normal
- the phone is very warm since it uses 3G and rendering map. if you hold more than 15 minutes, you feel like you are holding a brick from a oven.
- too much click/select in order to do basic direction.
- FREE, yeeehaa.
I want to sell my Garmin 350, still semi new with box since I got my diamond.