The home WiFi setup that solves 90 percent of buffering problems
Most "slow WiFi" is router placement and channel congestion, not ISP throughput. carmannews walks through the four-step diagnostic that fixes the bulk of complaints…
Carmannews staff
Kenji Tanaka
Tech Editor
Kenji leads the carmannews tech desk. His reporting focuses on consumer technology that actually ships rather than promises that don’t — phones, home networking, streaming hardware, and the small AI features that quietly improve daily life. Eight years of reviews, with a bias toward repairability and longevity.
Credentials: Former product reviewer at two consumer-tech publications; 8 years on the consumer-electronics beat.
Based in: Tokyo, Japan
12 stories at carmannews
Recent stories
Streaming service consolidation: who survives, who merges, who dies
The streaming bundle math is shifting fast. carmannews mapped which services are profitable, which are bleeding, and which the consolidation analysts we spoke to…
Cheap mechanical keyboard or expensive one? The difference is one component
Mechanical keyboards from $60 to $300 share the same key switches more often than they don't. The differences live in stabilisers, plate material, and…
The repairability score that should be on every electronics purchase
iFixit's teardown ratings predict total cost of ownership better than the launch reviews do. carmannews walks through how to factor repairability into a buying…
Switching cell carriers in 2026: the five-day playbook
Carrier switching has become genuinely painless in most markets, but readers still report friction. carmannews maps the five-day window — port-out request, eSIM activation,…
The smart-home setup that won’t lock you into one ecosystem
Matter and Thread were supposed to fix smart-home lock-in, and they partly have. carmannews walks through a build that uses Matter where it works…
Cloud storage in 2026: the real cost of “unlimited”
Several "unlimited" cloud plans now have soft caps, throttling, or hidden file-size limits. carmannews tested four popular plans for actual upload reliability and found…
Laptop buying in 2026: what the spec sheets still hide
RAM, storage, and CPU are easy to compare; thermal design, battery cell quality, and screen colour accuracy are not. carmannews lists the four spec-sheet…
Two-factor authentication: which apps are still safe to use
Several popular 2FA apps have introduced backup-to-cloud features that quietly weaken the threat model. carmannews lists which apps still implement TOTP correctly and which…
The earbud features worth paying for — and the ones that are pure marketing
Active noise cancellation is real and meaningful; "spatial audio" usually isn't; "AI sound enhancement" almost never is. carmannews maps the feature claims against the…