Hi using the HTC Nexus One... And I'm not using data, only Wifi. So this way I don't pay for data connexion.
But the Maps appl need a data connexion to download in real time the maps. On wifi it is fine, but I can not good far since I don't use the data on 3G.
Is there a way to preload all maps and use it offline? Is there another appl that do that?
It depends upon how long one spends abroad. An option is to unlock the phone and buy a local SIM card. Another option is to switch to a provider that offers no-cost roaming in certain countries (e.g. Three UK). The third option is to install off-line navigation software.
Note, Google navigation requires mobile data even with cached maps.
Another thing to note is that SIM unlocking can be done at low or no cost, depending on the phone model.