Main Terminal post-security, Tech on the Go sits in the core departure area.
This is the standard airport electronics shop at GUM, useful if a cable dies right before a red-eye. You’ll see the usual travel tech: phone chargers, power banks, earbuds, basic adapters, and some tablet and laptop accessories. Inventory leans toward big brands you’d recognize from Best Buy, plus some generic travel gadgets.
Pricing tracks typical airport markup: expect to pay roughly 20–40% more than off-airport shops in Tamuning. A simple USB‑C cable that runs $10 in town may hit $15 here, and mid-range wired earbuds can land around $25–$35. Still cheaper than being stuck with a dead phone on a 4–6 hour regional flight.
Hours generally mirror Main Terminal departure waves, opening ahead of early morning flights and staying open through late-night departures to Japan and Korea. If you clear security around 04:00 for a 06:00 departure, the lights are usually on. Overnight closures are common once the last bank of flights heads out.
Selection focuses on last-minute fixes over deep tech: think SD cards, basic Bluetooth speakers, simple phone cases for iPhone and Samsung, and occasional travel routers. Don’t expect niche cables or high-end headphones; this is more “did you forget it?” than “gear upgrade.”
Tip: check your cable and power bank at your hotel; if something looks sketchy, plan a 5-minute stop at Tech on the Go after Main security instead of hunting around the gate area later.