Sony Ericsson TT4031 (SE-GM29) - Manual (Page 33)

Owner’s Manual Rev 1.0 Page 33 of 33
2.4 SIM Card Reader
The TT4031 (SE-GM29) is fitted with a SIM card reader designed for 3 V
and 5 V SIM cards. It is the flip-up type, which is lockable in the horizontal
position and is accessed through a removable panel as shown below
The SIM card reader includes a SIM presence switch. This ensures that
when a SIM card is inserted or removed while the TT4031 (SE-GM29) is
turned ON, it will reset.