Pros Navigation on your blackberry
Cons slow, no service w/o cellular coverage, not great if you talk a lot while driving
Summary I have a Garmin GPS and tested it against the TeleNav on my AT&T Blackberry 8310. Really like that I had GPS on my phone. CON's because the maps aren't preloaded it's slow to refresh. In areas where I had poor cell coverage I couldn't use the service.If you talk while driving you will have problems using Telenav. I took many conference calls and would be forced to exit the application. You need to know your destination to see an actual moving map with your position.
Pros Portable, not bulky, works with my existing phone, up to date business info and maps, gas prices-- too many to name.
Cons I want this on a larger screen device. I should get a Blackberry just for running TeleNav
Summary I have been using TeleNav for past one year and have found it better than its competitors by leaps and bounds. Of course the carriers and cell phones need to get better with their GPS technologies, but TeleNav does an awesome job of delivering the best experience given the limitations. I live in San Francisco and unlike other GPS softwares on cell phones, TeleNav keeps me on track.
I love their new social networking gig with Share address and Refer Friend. In fact now my friends can also experience TeleNav.
Last winter I took my parents on a road trip and they only eat Indian food- I was able to find Indian restauarants using TeleNav in the middle of Flagstaff and also on I-10 - who knew.
All in all -my expectations are rising and I want more out of TeleNav- can't wait.
Pros nice integration with cell phone
Cons multiple problems
Summary At first I was very excited, but that quickly diminished after a few days. Using a Treo 680, you have to purchase a separate bluetooth GPS receiver, since it doesn't have one built in (this is roughly a 1/3 of the cost of a stand alone GPS navigator).
It doesn't work half the time, even when I'm in a clear open area that is not obstructed by any trees or buildings. It is not reliable enough for me since my work involves traveling to multiple locations on a daily basis. I don't have time to wait for it to "feel" like receiving the signal.
Also, you can't talk on the phone and use TeleNav simultaneously. It's either one or the other. That is such a pain, especially when there is a need to converse with clients while traveling.
It's accuracy is typically off by about 200 to 300 feet. It claims accuracy within 150 feet (50 meters), which is not very accurate in my opinion.
However, it does have some nice features, such as the biz finder, which finds locations of businesses and restaurants. It also provides the phone number and you can instantly call the business. You can also find the closest locations with the lowest price of gas.
Overall, it's not worth it. You shell out an upfront cost for a receiver and then $10 monthly fee (plus taxes and fees). If you plan on using GPS for more than a couple years, you'd be better off to go with a stand alone GPS navigator.Updated
For the Treo 680, you have a to have a bluetooth receiver in order to use TeleNav. If you travel a lot for work and are using this continuously, it will put a drain on your Treo's battery.
Pros I used the Iphone with AT&T Navigator to go from Miami to Michigan, long trip. It worked awsome, never lost connection on the GPS even though the cellphone did not have signal. It even helped us get out of two traffic jams along the way.
Cons The only item that needs help is the voice is very low, but then I have a Mini van with 3 daughters talking, the DVD movie playing, and even Granda Talking on her Cellphone.
Pros It has gotten me to quite a bit of locations in one piece. It drains the battery down to nothing on my blackberry. It also takes WAAY too long to re-route and the volume is too low for freeway driving even at its highest level.
Cons For the $ I paid AT&T every month I could've bought a very nice GPS stand-alone unit by now. As soon as I do - I'm DROPPING this service! On on trip it died 7 minutes before I reached my destination and I didn't have my car charger with me.
Summary Get a stand-alone unit. Don't throw away your money!