Dont believe those one star reviews - old iphone 4s and cheapskates to boot

If you had an iphone 4 and the TomTom Car Kit (which has the "real" GPS chip and yes it costs $100), it works 100% of the time with out fail and is perfectly accurate. Spent 3 weeks top to bottom in Italy without error and no delays. But if you are a cheap scap without the Car Kit, it relys on the telephone towers and because the iphone 4 processor is sooooo sloooow if you loose the tower it can take a long time for the cheap GPS chip in the iphone to find itself. The iphone 5 with much faster processsor is not prone to this. However the iphone 5 does not fit the CarKit and requires a slight mod of the CarKit to attach the phone and utilize the "Real GPS chip" and bluetooth feature. I have done this with my new phone and it works perfectly. Went from San Jose to Palm Springs to San Diego and back without error.

Dlfsj about TomTom Western Europe, v1.14