Yeah you heard it right. It seems 3310 & 3315 shares the same hardware but got some new software(Hence new features).All you gotta do is to upgrade the software to 3315 ROM image. So whats the catch? Since it doesnot have an IR port you have to get a Data connector cable(and a PC).
For more info check tis site https://cubwolf.btinternet.co.uk/tips.htm
I found it out 4m google....Now the cable will cost 400-800 bucks(on the net it costs $10-$15). the required software can be obtained on the net.
Things I have modded my phone
First the change for Xpress ON card.(Now it looks like Gian 8315).
Light Mod. Converted to Green to Pale blue-white Light.Now the light look like that of 7315.Has affected the standby time BUT NOT MUCH.
Im hoping to upgrade it to 3315.
Some more Mods Like changing Start Up Logos.(as soon as I save enuff money 4 Connector cable.)