[ GLOSSARY DEFINITION ]
Connectivity
mmWave
A high-frequency 5G band (24–39 GHz) with huge speed but very short range and poor wall penetration.
Also known as:
Millimeter Wave
5G mmWave
Full Definition & Technical Explanation
mmWave is the ultra-fast 5G band that can deliver multi-gigabit downloads — but signals barely travel beyond line of sight and struggle indoors. It is used in dense city hotspots and stadiums.
Most phones combine mmWave with the more practical Sub-6 GHz 5G. See 5G support and Download speed.
Where mmWave Matters
Smartphones
Frequently Asked Questions
What is mmWave?
A high-frequency 5G band (24–39 GHz) with huge speed but very short range and poor wall penetration.
What terms are related to mmWave?
Related Connectivity terms include 5G, Sub-6 GHz, 4G.
Related Technical Terms
5G
Fifth-generation cellular (sub-6 and mmWave) offering gigabit download when available.
Connectivity
Sub-6 GHz
The main 5G band below 6 GHz; slower than mmWave but with far better range and coverage.
Connectivity
4G
Fourth-generation cellular (LTE); still the reliable default with wide coverage.
Connectivity