Apple Watch Ultra 4 drops GLONASS satellite support, keeping GPS, Galileo, QZSS and BeiDou
Official specs show a change from the Ultra 3, which supported 5 systems, while the Apple Watch Series 12 keeps GLONASS
By Techhaus ThailandFriday, September 11, 2026
Apple Watch Ultra 4 — GPS · Galileo · QZSS · BeiDou (no GLONASS) · Dual-frequency
Apple Watch Ultra 3 — GPS · GLONASS · Galileo · QZSS · BeiDou (5 systems)
Apple Watch Series 12 — Still supports GLONASS · Single-frequency
What is GLONASS — Russia's satellite navigation system; most consumer devices can only receive its L1 signal
Likely reasons — Apple gave no explanation · Experts believe it improves accuracy, reduces processing load, and may help battery life
Source — Apple's officially published technical specs, via MacRumors
Source: Techhaus Thailand
