The next evolution of 5G for high-volume, low-power IoT (2025–2030)
Updated November 2025
Most IoT devices don’t need gigabit 5G.
They need something practical:
- Enough bandwidth for telemetry, small files, images and OTA updates
- Low power consumption
- Small module size
- Hardware cost low enough to deploy thousands of units
We already have 5G RedCap (Reduced Capability), which strips out the high-end smartphone features of 5G.
But eRedCap goes even further.
eRedCap = Enhanced Reduced Capability (3GPP Release 18)
Designed specifically for mass-market IoT devices that need reliable 5G connectivity without the cost, power draw or antenna complexity of RedCap.
Think of it like this:
NB-IoT = simple sensor pings
RedCap = industrial gateways, cameras, edge compute
eRedCap = the middle — smarter sensors, wearables, compact IoT hardware requiring moderate speed
Why does eRedCap exist?
Because most IoT devices don’t need:
- Multi-gigabit 5G
- Multi-antenna MIMO
- Ultra-low latency robotics
They need:
- 5–20 Mbps (not 1,000 Mbps)
- A cheap module
- Long battery life
- A single antenna in a tiny enclosure
eRedCap enables this by simplifying the 5G modem design:
| Feature | Full 5G | RedCap | eRedCap |
|---|---|---|---|
| Typical downlink | 1 Gbit+ | 50–150 Mbps | ~5–20 Mbps |
| RF complexity | High | Medium | Low |
| Antennas | 4×4 MIMO | 2×2 or 1×2 | Single antenna support |
| Power consumption | High | Medium | Very low |
| Ideal devices | Routers, CPE, vehicles | Gateways, cameras | Wearables, sensors, lightweight IoT |
Where RedCap suits routers, gateways and smart infrastructure,
eRedCap suits the millions of sensors and low-power industrial endpoints that RedCap would still overspec.
eRedCap technical fundamentals
eRedCap is part of 5G Advanced (3GPP Release 18).
Key technical changes that make eRedCap ultra-efficient:
✅ Reduced bandwidth
Instead of taking up 20 MHz or more like RedCap, eRedCap can run on much smaller channels.
✅ Single-antenna support
A major cost + size saving for hardware manufacturers.
✅ Lower modem complexity
- No carrier aggregation
- No dual connectivity (no need to maintain LTE + 5G simultaneously)
- Reduced MIMO layer count
✅ Strong standby efficiency
Features like DRX and eDRX reduce idle power consumption.
Battery-powered IoT becomes more viable.
Real-world eRedCap applications
Smart infrastructure
- Street lighting
- Environmental monitoring
- Parking and traffic telemetry
- Smart signage / kiosks
Industrial IoT & telemetry
- Modbus / RS485 field devices
- Compact solar-powered remote sensors
- Tank level / high-frequency telemetry units
Healthcare & wearables
- Medical telemetry devices
- Mobile emergency response units
- Portable diagnostics
Consumer IoT
- Smart appliances
- Home automation hubs
Known early eRedCap hardware (modules & chipsets)
These parts exist now or are in certification — available to OEMs and will appear inside routers/gateways during 2025–2026.
Telit Cinterion (modules)
| Module | Type | Notes |
|---|---|---|
| FN920C04 | 5G RedCap / eRedCap capable | Designed for migration to eRedCap mode when networks activate Release 18 |
| FE910C04 | RedCap / migration-ready | Focused on lower power and small footprint |
Telit have explicitly positioned their RedCap portfolio as eRedCap forward compatible.
Quectel
| Module | Type | Status |
|---|---|---|
| RG255C-GL | NR-RedCap | Firmware roadmap includes eRedCap mode |
| Future RG2xx-E | Dedicated eRedCap | Expected once operator Release 18 support is live |
Fibocom
| Module | Type | Notes |
|---|---|---|
| FG132 series | RedCap | Designed for future eRedCap support |
| FG190 | eRedCap target | For ultra-compact devices |
Routers & gateways (expected)
RedCap is already appearing in industrial routers (example: Teltonika RUT276),
so eRedCap hardware will follow the same footprint — mini IoT gateways, DIN-rail, and embedded SoM boards.
eRedCap is ideal for:
- compact low-bandwidth routers
- slim M2M boards
- IoT devices that were previously LTE Cat1/CatM1
Projected first industrial eRedCap routers:
- Teltonika (likely variant to RUT2xx platform)
- Robustel
- Milesight / Ursalink
- Industrial embedded SoM vendors
Translation:
RUT276 = RedCap → next small Teltonika = likely eRedCap
You’ll see the first production units around late 2025 once UK SA footprint matures.
eRedCap and the UK: network readiness
eRedCap requires 5G SA (Standalone) networks.
Current UK positions (high-level):
- EE / BT – rolling out SA, enterprise/private network focus
- Vodafone / Three – merger accelerating SA rollout
- Private 5G – ports, manufacturing, campus networks
During 2025–2026:
→ Expect RedCap deployments using LTE fallback
→ eRedCap becomes viable once SA is widespread
Antennas for eRedCap
What antennas should be used?
eRedCap uses the same FR1 sub-6 GHz frequency ranges as 5G RedCap.
In the UK, that means:
| Band | Name | Notes |
|---|---|---|
| n78 (3.3–3.8 GHz) | Primary 5G band in UK | Most eRedCap modules will prioritise this |
| n77 (3.3–4.2 GHz) | Extended version of n78 | Enterprise/private networks |
| n28 (700 MHz) | Long-range / rural | Good penetration, slower bandwidth |
| n1 / n3 (2.1 GHz / 1.8 GHz) | Refarmed LTE | Good mid-band fallback |
Recommended antenna characteristics
For eRedCap devices:
- Single antenna support is possible (unlike RedCap routers that may require 2×2)
- Use wideband 600–4200 MHz support to cover n78 + fallback
- For outdoor devices, use low-loss cable (LMR-200 or better)
External vs internal antenna?
| Scenario | Recommendation |
|---|---|
| Compact devices / wearables | Internal flex PCB antenna |
| Industrial cabinet or DIN rail | External SMA antenna |
| Large outdoor, EV charger, CCTV pole | High-gain external + low-loss cable |
Do not mix paddles + external antennas
If the device supports 2×2 MIMO (e.g., hybrid RedCap models), mixing internal paddles and external antennas kills performance symmetry.
Frequently Asked Questions (FAQ)
Is eRedCap real 5G?
Yes. It is part of 5G Advanced and uses the 5G NR air interface.
Does eRedCap replace RedCap?
No.
RedCap is for gateways and routers.
eRedCap is for smaller, cheaper, lower-power devices.
Will eRedCap work on 4G LTE fallback?
Most modules will include LTE fallback — but check the module.
When will eRedCap be available in routers?
Expect the first DIN-rail and compact industrial units late 2025 to mid-2026.
What antennas are required?
Wideband FR1 antennas, ideally 600–4200 MHz, single antenna acceptable.
Which SIM cards are best?
- Multi-network roaming IoT SIM
- eSIM (eUICC) for remote profile changes
- Private APN or VPN where remote access is needed
Key takeaway
- RedCap = 5G for gateways, routers, edge devices
- eRedCap = 5G for compact sensors, wearables, battery IoT
- Both are the future of scalable industrial connectivity
The LTE era is ending.
RedCap and eRedCap are the upgrade paths.
If your product roadmap depends on small, efficient, scalable IoT,
start designing eRedCap into it now.