✔ 最佳答案
To see MPEG4 file from PC, if it is real time, you need to connect to a streaming server, and if not a normal download would do; however both must be connected to public internet.
As for both streaming and download require a public access from phone, and right now using 3G is very expensive to access public content (both Streaming and Download), hence I suggest you should target with WiFi even finding hotspot is a bit troublesome, but most Pacific Coffee and Starbucks are WiFi covered.
If Streaming, as there are more multi-media player (for streaming or download playback) for Windows CE than for Symbian UIQ, hence I think O2 is better. However there are also a lot of free multimedia player for S60 Symbian, you can take a look for those phones as well. If for Download playback, phone won't have much difference.