I have always found it useful to have a way of getting online when overseas. Sometimes it is painful (like my recent trip to France) and sometimes it is painless (like on my trips to the less sunny Dublin). Whichever location you go to though you can be sure that you can get a local Prepay/PAYG data SIM card that just needs to be put into the right device to give you a data connection. I have been favouring an unlocked MiFi device but in my recent troubles I needed to do more debugging that what was possible on the MiFi. I made use of an unlocked Android phone and it provided the best service it could considering the lousy service I was on (Orange FR was appalling).
The key is getting one that is unlocked or is easy to unlock, and I made use of the very unlockable Orange San Francisco (ZTE Blade). At least I could once I also put Android 2.2 on the device. It was a very effective Personal WiFi device over there and I am now definitely looking to replace my older MiFi device with the Android, most obviously because it also offers access to the voice services necessary in many locations to update the credit as well as the use of a local voice number if I so required (my current tariff with O2 makes that very optional).
For those of you who are not into unlocking (and a bit of rooting!) then I do suggest digging through the phones on display to find an Android 2.2 or above device and getting it unlocked. I do recommend checking out Carphone Warehouse for Prepay deals as their phones do tend to be unlocked to allow them to sell on any network but make sure that the phone is an Android 2.2 or above to get the built-in WiFi Tethering. The latest deals for the Sony Experia X10 Mini look interesting but you will have to look at some of the third party mechanisms for WiFi Tethering if you do purchase that one as it is 2.1 or even earlier by default.
