On what phones does this work on? Does it work on newer phones? Does it work on w580i??

I have found a patch for w580i anyway but I haven't tested it.

Code:
;W580 R8BA024
;Possibility to store more SMS (was 1000)
; Romove the; on the one you wish to have
;(c) demion
;(p) Adow
;(p) Lo Little
+44140000
;FED776: FA229200 7d221201; 2000 SMS
;FED776: FA229200 FA221201; 4000 SMS
;FED776: FA229200 9D229201; 10000 SMS