Japanese telecommunications operator running the au mobile brand.
I've stayed with au for half a decade because it simply works. Coverage is superb, the 5G rollout in my area made things even faster, and the app makes managing everything painless. Whenever I've needed help, the response has been quick and courteous. A genuinely excellent carrier.
Superb coverage and fast support
KDDI's au service has given me incredibly stable coverage all over Japan, from dense Tokyo to quiet countryside towns. The 5G speeds are excellent and I've never had a dropped call. The au app and points integration with everyday shopping is a genuinely nice bonus. Couldn't be happier.
The au network quality itself is excellent, but I ran into a billing issue that took three separate visits to a store to resolve and a lot of back and forth. For a carrier this large the after-sales support felt slow and disjointed. The network deserves better service behind it.
I switched to au from another carrier and the difference in coverage is obvious, full bars even in spots where I used to lose signal entirely. Data speeds for streaming are consistently fast and the plan I chose offers great value. Really glad I made the move.
KDDI (au) has a RevWala Trust Score of 62/100 (Average), based on 5 customer reviews with an average rating of 4.4 out of 5. Reviews are mixed — read recent ones before deciding.
KDDI (au) is rated 4.4 out of 5 stars from 5 reviews on RevWala, with a "Average" Trust Score.
KDDI (au) has 5 reviews on RevWala, including 1 verified review.
Stable nationwide coverage and great perks
Strong network quality
Slow, disjointed support
KDDI au has been outstanding for both work and personal use. The network is fast and dependable on the bullet train and in the mountains, and the customer staff at the shop were patient and helpful when I set up my plan. The bundled perks are the cherry on top.
Dependable speed and helpful staff
Excellent coverage and value