Band encyclopedia
B18 · 800 Lower (Japan)
B18 is a 3GPP LTE (4G) band (800 Lower (Japan)), FDD duplex, uplink 815–830 MHz and downlink 860–875 MHz. The whole band sits below 1 GHz, so it is a coverage layer: it travels far and gets through walls, deciding rural and indoor signal. Of the 155 networks we check, 2 use it (Japan).12
Will your device work on B18?
- MF833V✘ no B18Global industrial LTE Cat 4, USB-Afrom US$45 · MOQ 100
- Dongle 400✘ no B18For industrial AR glasses, USB-C, IP66from US$45 · MOQ 2,000
- F40✘ no B185G RedCap dongle (needs 5G SA), 4G fallbackfrom US$46 · MOQ 2,000
None of our three devices covers B18 yet. Tell us your project and we will recommend a module that does.
Specification
| Type | LTE (4G) |
|---|---|
| Duplex | FDD |
| Uplink | 815–830 MHz |
| Downlink | 860–875 MHz |
| Channel bandwidth | 5, 10, 15 MHz |
| Layer | Coverage layer (whole band below 1 GHz) |
| Related bands | contained in B26; same frequencies as 5G NR band n18 |
Who uses it
| Operator | Country | Check |
|---|---|---|
| KDDI (au) | Japan | ✔ cross-checked |
| Rakuten Mobile | Japan | ✔ cross-checked |
What it means for IoT devices
- For IoT devices headed to Japan, support B18: it is a coverage layer, and without it indoor and rural signal drops noticeably.
Our dongles (MF833V, Dongle 400, F40) do not support B18.
Sources
- A TS 36.101 Rel-19, Table 5.5-1 E-UTRA operating bands 3GPP (via iTecSpec) · 2026-09-30
- C LTE frequency bands Wikipedia · 2026-09-30
