5 of 5 people found the following review helpful
This review is from: TomTom Car Kit for iPhone (Compatible with iPhone 3G, 3GS and 4) (Wireless Phone Accessory)
I tried this product now for few weeks. My iPhone 3GS GPS is already not bad, however a get the no signal note every now and then and sometimes it takes around a minute to find a signal, plus some minor lags. However, since using the TomTom car kit i get the signal immediately, and no lags at all. I strongly recommend the product for travelers.