Customers
My GRASS for Customers
Manage services, track progress and get fast support all in one system.
- ✓Manage information & profile
- ✓Track services easily
- ✓Get fast support
Supporting your life and work in Japan.
Trusted to walk with you.
GRASS was established in 2019, beginning as Chiba Mobile, a mobile phone shop and an authorized agent of three major telecommunications providers in Japan: Docomo, au, and UQ. Building on this foundation, GRASS later developed the GRASS Mobile brand, specializing in affordable SIM card and Wi-Fi rental services, as well as telecommunications solutions designed to support foreign residents in Japan. Over time, GRASS has expanded beyond telecommunications into visa support and real estate services, serving not only the Vietnamese community but also customers from Myanmar, Indonesia, Nepal, and many other countries. Today, GRASS has further expanded its presence into Vietnam with the establishment of a local branch. We have a professionally trained and highly skilled team dedicated to providing attentive support to every customer, guided by our philosophy: “Reliability You Can Count On.” GRASS is committed to being a trusted partner, providing convenient and sustainable solutions for foreign communities in both Japan and Vietnam.
Founded
Service lines
Offices
Customers supported
Always deliver professional, high-quality services that precisely meet customer needs.
Build trust through business ethics, transparency and honesty in every transaction.
Continuously innovate to bring new services and solutions that keep pace with market trends.
Always ready to cooperate and support customers in achieving their goals.
Four core service lines to accompany you in Japan.
What do you need?
Pick what you need to read helpful guides from GRASS.
My GRASS connects customers, collaborators and agents — transparent, convenient, and built to grow with you.
Manage services, track progress and get fast support all in one system.
My GRASS for Partners & Agents
Manage leads, commissions and orders as a collaborator or agent.
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