Description
Samsung T-Mobile Sidekick 4G (T839), factory refurbished, GSM unlocked
This listing is the Samsung-built T-Mobile Sidekick 4G, model T839, supplied factory refurbished and unlocked for GSM networks. It is the 2011 Android revival of the Sidekick line: a 3.5-inch touchscreen over a five-row QWERTY keyboard on the pop-tilt hinge, running Android 2.2. TG Wireless supplies it to dealers who serve collectors and enthusiasts, to buyers exporting to markets where 2G or 3G service is still live, and to prop houses and parts buyers who want working, cosmetically consistent units rather than a mixed used lot.
Key specifications
| Model | Samsung T839 (T-Mobile Sidekick 4G) |
|---|---|
| Operating system | Android 2.2 (Froyo) |
| Display | 3.5-inch touchscreen, 480 x 800 pixels |
| Keyboard | Five-row QWERTY on the pop-tilt hinge, dedicated jump key for app switching |
| Processor | 1 GHz Cortex-A8 (Hummingbird) |
| Cameras | 3-megapixel autofocus rear camera with video capture, VGA front camera |
| Cellular | GSM 850/900/1800/1900 MHz; UMTS/HSPA+ bands I and IV (2100/1700 MHz), up to 21 Mbps |
| Wireless | Wi-Fi 802.11 b/g/n, Bluetooth 3.0, DLNA media sharing |
| Storage | microSD slot, 2 GB card included, supports up to 32 GB |
| Audio | 3.5 mm headphone jack |
| Size and weight | 5.0 x 2.42 x 0.6 in, 5.7 oz |
Condition: factory refurbished
Factory refurbished units have been reconditioned to close-to-new working order. They are not brand new and may show light signs of handling. TG tests and grades each unit before it ships. Tell your account manager whether you need units with the original T-Mobile box and accessories or handset-only packs; the mix varies by lot.
Network and compatibility
Be clear with your customers about where this phone can get service. The Sidekick 4G has no LTE radio. All three US national carriers retired their 3G networks in 2022, and T-Mobile retired its 2G GSM network on August 3, 2026, so the Sidekick 4G will not register for calls or data on any US carrier today. It is unlocked for GSM networks abroad where 2G or 3G coverage remains, and its Wi-Fi functions work anywhere. Treat it as a collector, export, or display device rather than a US activation.
Resale fit
- Collector and enthusiast retail: the Sidekick keyboard and hinge still carry a following, and refurbished units with matching cosmetics sell better than mixed used lots.
- Export to regions with active GSM or UMTS service, for buyers who want a keyboard phone with Wi-Fi and Android.
- Film, TV, and photo prop rental, where a period-correct working handset matters more than carrier service.
- Repair and parts stock: screens, keyboards, hinges, and batteries for Sidekick 4G owners.
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.
