Description
Samsung Katalyst T739 GSM Unlocked Cellphone, New
Brand new Samsung Katalyst T739 cellphone, GSM unlocked, listed with its original battery, battery door, charger, and user guide. New Katalyst stock is a collector and prop item first, as one of the early phones to carry Wi-Fi calling, and it still works as a quad-band GSM phone for exporters supplying 2G markets.
The Samsung Katalyst, model SGH-T739, is a 2008 T-Mobile slider notable for Wi-Fi calling before smartphones made it common: it supported T-Mobile's @Home UMA service, handing calls between Wi-Fi and the cellular network. Beyond that it is a straightforward quad-band GSM feature phone with a 1.3 MP camera, MP3 player, Bluetooth, instant messaging clients, a memory card slot, and voice recognition.
TG Wireless offers the Katalyst to collectors and prop buyers interested in early Wi-Fi calling handsets, and to exporters who need quad-band GSM phones for markets where 2G service continues.
Key specifications
| Model | Samsung Katalyst, SGH-T739 (2008) |
|---|---|
| Network status | GSM unlocked |
| Form factor | Slider |
| Network | Quad-band GSM |
| Wi-Fi | Wi-Fi calling via T-Mobile @Home (UMA) |
| Camera | 1.3 MP with video capture |
| Audio | MP3 player, Bluetooth |
| Messaging | AIM, ICQ, Windows Live Messenger, Yahoo Messenger clients |
| Memory | External memory card slot |
| In the box (as listed) | Handset, original battery and battery door, original charger, user guide |
Condition: New
Brand new units in the original box with the original in-box accessories as listed. Nothing has been activated or reconditioned. If your channel needs sealed retail packaging rather than open-box new, say so when you request a quote so the account manager can confirm how the lot is packed. The listing states the box includes the original battery, battery door, charger, and user guide.
Network and compatibility
The Katalyst is a 2G quad-band GSM phone with no 3G or LTE. T-Mobile's 2G network, the last US GSM network, closed on August 3, 2026, and the @Home UMA Wi-Fi calling service it depended on was discontinued years earlier, so the T739 gets no US service. This listing is GSM unlocked; see the network status line in the table. Abroad, it works on live 850/900/1800/1900 GSM networks.
Resale fit
- Collector shops and prop houses interested in early UMA Wi-Fi calling phones.
- Export lots for markets with live 2G GSM service.
- Display and parts units.
Ordering from TG Wireless
TG Wireless sells to the trade. Pricing is shown to approved dealer accounts, and your account manager confirms availability, quantities, and grade mix before invoicing. Orders typically ship within 24 hours of order placement by FedEx, UPS, or DHL, within the United States and internationally. TG Wireless's 12-month warranty applies, with coverage and RMA handling per your order documentation. Resellers with a valid resale certificate are not charged sales tax. The FAQ covers account setup and shipping questions.
