PHONE #1: SEASON 1 (Episodes 1.1 and 1.2)
SONY ERICSSON K810i
PHONE #2: SEASON 1 (Episode 1.3) & SEASON 2
SONY ERICSSON C901
This phone appears in 2.2: THE MAN WHO SMILED as Kurt returns from his exile.
1. Kurt charges this phone just after managing to start his car after the long hiatus.
PHONE #3: SEASON 3
Sony Ericsson Cedar (J108i)
PHONE #?: SEASON 4
IMAGE SOURCE: GSMArena.com
INFO: Michael Jakobs (PHONE #1) - thanks Michael!