Description
Samsung Jack I637. (BlackJack III) AT&T GSM Unlocked, New
Offered new, this Samsung Jack I637, the BlackJack III, is the AT&T Windows Mobile 6.1 QWERTY bar with Turbo Scroll navigation, Wi-Fi, and a 3.2 MP camera, GSM unlocked; no color is stated. Collectors who want an unused Windows Mobile business phone and export dealers in UMTS markets are the natural buyers.
The Samsung Jack, model SGH-i637 and informally the BlackJack III, is a 2009 Windows Mobile 6.1 Standard smartphone for AT&T: a 2.4-inch 320 x 240 non-touch display, a front-facing full QWERTY keyboard with Turbo Scroll pressure-sensitive navigation, a 528 MHz processor, 256 MB ROM and 256 MB RAM, a 3.2 MP camera, Wi-Fi, GPS, Office Mobile document editing, a microSD slot rated to 16 GB, and tri-band 3G HSDPA for AT&T plus quad-band GSM. It was the business successor to the BlackJack II.
TG Wireless supplies the i637 new and factory refurbished to collectors and prop houses that want a Windows Mobile QWERTY bar, and to exporters in markets with live UMTS service.
Key specifications
| Model | Samsung Jack, SGH-i637 (2009), AT&T, informally BlackJack III |
|---|---|
| Network status | GSM unlocked |
| Operating system | Windows Mobile 6.1 Standard |
| Display | 2.4-inch, 320 x 240 pixels, non-touch |
| Keyboard | Front-facing full QWERTY with Turbo Scroll |
| Processor | 528 MHz |
| Memory | 256 MB ROM, 256 MB RAM, microSD up to 16 GB |
| Camera | 3.2 MP |
| Connectivity | Quad-band GSM, 3G HSDPA 850/1900/2100, Wi-Fi, Bluetooth, GPS, micro-USB |
| Software | Microsoft Office Mobile, Outlook Mobile |
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.
Network and compatibility
The SGH-i637 is a 2G GSM and 3G UMTS phone with no LTE. US 3G networks closed in 2022 and T-Mobile's 2G GSM network closed on August 3, 2026, so it gets no US carrier service today. The lots here are GSM unlocked, so the phone still registers on live GSM or UMTS networks abroad, and Wi-Fi works everywhere for e-mail and Office Mobile; see the network status line in the table.
Resale fit
- Collectors and prop houses that want a Windows Mobile QWERTY business phone.
- Export dealers in markets with live 2G or 3G GSM service.
- Offline use for Office Mobile and e-mail on Wi-Fi.
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.
