| Attribute | Ericsson T28s × | BenQ-Siemens A53 × |
|---|---|---|
| General | ||
| Brand | Ericsson | BenQ-Siemens |
| Launch | ||
| Announced | 1999-01-01 | 2007-04-01 |
| Body | ||
| Width (mm) | 15 | 14.8 |
| Length (mm) | 97 | 80 |
| Height (mm) | 50 | 42 |
| Weight (g) | 83 | 68 |
| SIM | Mini-SIM | Mini-SIM |
| Network | ||
| Technology |
|
|
| 2G bands |
|
|
| Memory | ||
| Card slot | No | microSD (dedicated slot) |
| Display | ||
| Resolution (px) | 101 x 33 | 176 x 220 |
| Display Type | Monochrome graphic | TFT |
| Battery | ||
| Type | Removable | Removable |
| Capcity (mAh) | Li-Po | Li-Ion |
| Main Camera | ||
| Main Camera Type | - | Single |
| Main Camera Properties | - |
|
| Main Camera Video | - | Yes |
| Comms | ||
| WLAN | No | No |
| Bluetooth | No | No |
| GPS | - | - |
| Radio | No | No |
| USB | - | 1.1 |
| Sound | ||
| Loudspeaker | - | + |
| 3.5mm jack | - | - |
| Misc | ||
| Colors | - |
|
| Phonebook | 250 | Yes |
| Call records | - | 20 dialed, 20 received, 20 missed calls |
| Alert types | Vibration; Monophonic ringtones, composer | - |
| Features | ||
| Messaging | SMS | SMS, MMS, Email |
| Clock | Yes | - |
| Browser | - | WAP 2.0/xHTML |
| Alarm | Yes | - |
| Games | 2 - Tetris, Solitarie | Yes |
| Languages | 37 | - |
| Java | No | Yes, MIDP 2.0 |
| Stand-by (h) | 65 | 200 |
| Talk time (h) | 4 h 30 min | Up to 3 h 20 min |