Ericsson T28 World
| Type Type | Monochrome graphic |
| Size Size | (unknown/no) |
| Resolution Resolution | 101 x 33 pixels, 3 x 12 chars |
| Multitouch Multitouch | |
| Display Display | Fixed icons |
| Stand-by Stand-by | 65 h |
| Talk time Talk time | 4 h 30 min |
| Battery Battery | Removable Li-Po 500 mAh battery |
| Card slot Card slot | No |
| Phonebook Phonebook | |
| Call records Call records |
| Technology Technology | GSM |
| 2G 2G bands | |
| 2G Bands | GSM 900 / 1900 |
| 3G 3G bands | |
| GPRS GPRS | |
| EDGE EDGE | |
| 4G 4G LTE support. |
| WLAN WLAN | No |
| Bluetooth Bluetooth | No |
| GPS GPS | No |
| Radio Radio | No |
| USB USB | (unknown/no) |
| NFC NFC | |
| Infrared port Infrared port |
| Dimensions Dimensions | 97 x 50 x 15 mm (3.82 x 1.97 x 0.59 in) |
| Weight Weight | 83 g (2.93 oz) |
| SIM SIM | Mini-SIM |
| Messaging Messaging | SMS |
| Browser Browser | (unknown/no) |
| Java Java | |
| Games Games | |
| Features Features | Voice dialing | Voice answering | Profiles | Helptexts and shortcuts | Active flip |
| Clock Clock | |
| Alarm Alarm | |
| Languages Languages | 37 |
| Colors Colors | (unknown/no) |
| Alert types Alert types | Vibration; Monophonic ringtones, composer |
| Loudspeaker Loudspeaker | |
| 3.5mm jack 3.5mm jack |
| Announced Announced | 1999 |
| Status Status | Discontinued |