U.S. Mobile Signal Frequencies Explained — Essential for 5G Jammer Configuration

As the world embraces 5G technology, understanding the frequency spectrum used by U.S. mobile networks is more critical than ever — especially if you're working with signal analysis, network planning, or building a mobile signal jammer for 5G frequency bands.

Whether you're interested in blocking unwanted signals, improving privacy, or simply learning about frequency structures, this guide breaks down the key U.S. cellular frequency ranges used for 2G, 3G, 4G LTE, and 5G. In the previous article we also introduced Common Data Transmission Frequencies in the U.S.

Key Mobile Frequency Bands in the U.S.

Low-Band Frequencies — Long-Range and Penetrating

617–652 MHz

This frequency block is now a core part of low-band 5G deployments, particularly by T-Mobile. It offers strong indoor signal penetration and wide-area coverage — and is a primary target for 5G signal blocking devices.

700 MHz (Band 12 / 13 / 17)

Once part of the UHF TV spectrum, now essential for LTE and early-stage 5G. Provides extended-range service, especially in suburban and rural areas.

850 MHz (Band 5) = CDMA

Used heavily for voice and LTE fallback, still active across many networks for core communication coverage.

Mid-Band Frequencies — Balanced Speed & Reach

1850–1995 MHz (PCS Band 2)

These frequencies support GSM, 3G, and LTE, still widely used in urban environments. Popular in jammer frequency chart references for multipurpose jamming.

1710–1755 / 2110–2155 MHz (AWS Band 4/66)

Mid-band spectrum for LTE and newer 5G NR networks. Great for speed, low latency, and moderate coverage.

2496–2690 MHz (Band 41)

Previously used by Sprint, now a key asset in T-Mobile’s Ultra Capacity 5G. This band is often included in signal jammer kits targeting 5G.

3700–3980 MHz (C-Band)

C-Band is the current backbone of mid-band 5G for Verizon and AT&T. Known for combining excellent speed with wide-area availability, this range is vital when configuring advanced 5G jamming device.

High-Band (mmWave) — Superfast, Short Range

24–39 GHz (mmWave spectrum)

These ultra-high frequencies offer gigabit-level 5G performance, but with short range and limited wall penetration. Common in stadiums, airports, and dense urban zones. Often excluded from basic jammers but targeted by military-grade signal disruption systems.

Why This Frequency Knowledge Matters for Jammer Builders ?

If you're building or configuring a custom signal jammer — especially a mobile signal jammer for 5G frequency bands — knowing the exact frequency blocks used by U.S. carriers is crucial. Each signal blocker must be calibrated to interfere with:

• Specific bands in use (e.g., 617 MHz for low-band 5G)
• Targeted zones (urban, rural, or indoor)
• Carrier-specific channels (e.g., Band 41 for T-Mobile 5G)

Here's where such frequency knowledge plays a role:

U.S. Carrier Frequency Reference Table

Final Thoughts: Build Smarter signal Blockers with the Right Frequencies

Whether you're customizing a jammer for private security, RF testing, or controlled-signal blocking environments, frequency awareness is your edge.

Knowing which spectrum blocks are active in your area — and which carriers use them — allows for precise jamming configuration and better signal control. In the age of 5G, it's no longer enough to block GSM or LTE — next-gen signal disruption requires accurate targeting of 5G frequencies like 617 MHz and 3700 MHz.

Want to learn more about which jammer models work best for these bands? Stay tuned — or explore our jammer collection designed for 5G applications.