Siemens A40 specifications
| Dimensions | 118 x 46 x 27 mm |
| Volume | 106 cc |
| Weight | 122 grams |
| Stand-by | 1.5 week |
| Talk time | 4 hour |
| Announced | November 2001 |
| Status | No longer available |
| Monoblock | |
| Monochrome display | |
| 2 lines |
| User exchangeable covers | |
| Vibrating alert | |
| Dual band | |
| Date and time notation | |
| SMS | |
| Monophonic ringtones | |
| Battery | User replaceable |