6dBi Portable Cell Phone Signal Booster Antenna – 3.5mm Jack
6dBi Portable Cell Phone Signal Booster Antenna – 3.5mm Jack
Boost Your Mobile Signal Anywhere with the 6dBi External Phone Antenna
Stay connected no matter where you are! This compact 6dBi portable cell phone signal booster antenna plugs directly into your phone's 3.5mm jack to amplify cellular reception in challenging environments — including buildings, hallways, tunnels, basements, and remote areas. Lightweight, easy to install, and instantly effective, it's the perfect pocket-sized solution for improving call clarity and data connectivity on the go.
Made in Mainland China.
Key Features
- 6dBi High Gain: Significantly amplifies digital and analogue signal strength for clearer calls and more stable data connections.
- Universal 3.5mm Connector: Compatible with most smartphones and mobile devices equipped with a 3.5mm headphone/antenna jack — no tools required.
- Plug & Play Installation: Simply plug in and go — no software, no configuration, no hassle.
- Wide Frequency Coverage: Supports 1880–1920 MHz and 1990–2170 MHz bands for broad network compatibility.
- Vertical Polarization & Low VSWR: VSWR ≤1.5 ensures efficient signal transfer with minimal loss.
- Ultra-Portable Design: Weighs only ~22g and measures approximately 13.66 × 5.63 cm — easy to carry in any bag or pocket.
- Adsorption Mounting: Stays securely attached to your device while in use.
Technical Specifications
| Color | Black |
| Frequency | 1880–1920 / 1990–2170 MHz |
| VSWR | ≤ 1.5 |
| Gain | 6 dBi |
| Polarization | Vertical |
| Rated Power | 50W |
| Input Impedance | 50 Ohms nominal |
| Connector Type | 3.5mm Jack |
| Antenna Type | External |
| Installation | Adsorption |
| Dimensions | ~13.66 × 5.63 cm / 5.38 × 2.22 in |
| Weight | ~22g |
What's in the Box?
- 1× Mobile Phone External Antenna (3.5mm)
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Frequently Asked Questions
Q: What devices is this 6dBi cell phone signal booster antenna compatible with?
A: This external antenna is compatible with most smartphones and mobile devices that feature a standard 3.5mm jack port. It connects quickly without any additional tools or software, making it suitable for a wide range of handsets that support external antenna input via 3.5mm.
Q: What frequency bands does this portable signal antenna support?
A: The antenna supports 1880–1920 MHz and 1990–2170 MHz frequency bands, covering common 3G and cellular network frequencies used in many regions. Always verify your carrier's supported bands for best performance.
Q: How do I install and use this portable phone antenna?
A: Installation is extremely simple — just plug the 3.5mm connector into your phone's jack port. The antenna uses an adsorption mounting method to stay firmly in place during use. No apps, drivers, or configuration are needed. Once connected, it works immediately to help strengthen your device's cellular reception.
Q: Will this antenna work in tunnels, buildings, and remote areas?
A: Yes! This antenna is specifically designed to help improve cellular reception in challenging environments such as hallways, large buildings, tunnels, basements, and rural or remote locations where standard phone reception tends to be weaker. Results may vary depending on your network carrier and local signal conditions.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.