For a family of seven, smartphone costs are too high.
This is a common concern, but the conclusion is simple.

👉 Just switching to Rakuten Mobile can significantly reduce fixed costs

This time, based on an actual family structure,
we realistically estimate the cost difference when switching from Docomo to Rakuten Mobile.

---

■ Family Structure (7 people)
• Grandfather (65+)
• Grandmother (65+)
• Father
• Mother
• Eldest son (high school student)
• Second son (junior high school student)
• Daughter (11 years old)

---

■ Current: Docomo Pricing (Family Discount Applied Assumption)
※ Calculated based on Rakuten Mobile official image database
https://network.mobile.rakuten.co.jp/fee/saikyo-plan/

Family / Plan / Monthly (before tax)
Grandfather / 3GB / 5,080 yen
Grandmother / 3GB / 5,080 yen
Father / 20GB / 6,580 yen
Mother / 20GB / 6,580 yen
Eldest son / Unlimited / 6,580 yen
Second son / Unlimited / 6,580 yen
Daughter / 3GB / 5,080 yen

👉 Total: 41,560 yen/month

---

■ If Switching to Rakuten Mobile
Rakuten’s core is “tiered pricing + stacked discounts”

Applicable discounts
• Family discount: -110 yen/person
• Senior discount (65+)
• Youth discount (13–22)
• Kids discount (under 12)

---

■ Rakuten Mobile Cost Simulation

Family / Data / Base Price / After Family Discount
Grandfather / 3GB / 968 yen / 780 yen
Grandmother / 3GB / 968 yen / 780 yen
Father / 20GB / 1,980 yen / 1,880 yen
Mother / 20GB / 1,980 yen / 1,880 yen
Eldest son / Unlimited / 3,980 yen / 3,780 yen
Second son / Unlimited / 3,980 yen / 3,780 yen
Daughter / 3GB / 580 yen / 480 yen

👉 Total: 13,360 yen

---

■ How Much Can You Save?

Docomo: 41,560 yen
Rakuten Mobile: 13,360 yen
Difference: 28,200 yen/month saved

👉 Annually
Approx. 340,000 yen savings

This is no longer just a “review” level—
it’s a household financial impact level.

---

■ Why Is It So Cheap?

① Unlimited data is extremely cheap
Docomo: 6,580 yen
Rakuten: 2,880 yen
👉 Less than half

② No waste for low data users
3GB tier:
• Docomo: 4,080 yen
• Rakuten: around 880 yen
👉 Bigger difference for seniors and children

③ Stackable discounts
• Family discount
• Age-based discounts
👉 Designed to benefit everyone

---

■ Benefits
✔ The more family members, the cheaper
✔ Unlimited doesn’t spike pricing
✔ 2GB overseas free
✔ Free calls via Rakuten Link

---

■ Drawbacks
👉 Signal may vary by area
👉 Indoor/underground areas require attention
※ However
👉 Major urban areas are mostly fine

---

■ Conclusion
For this family structure,
👉 There is almost no reason not to choose Rakuten Mobile

Key points👇
• 2+ unlimited users
• Seniors or children included
• 5+ family members

👉 If these conditions are met,
Rakuten Mobile is likely the optimal choice

---

■ Final Note
Fixed costs, once reviewed,
automatically leave you with more money every month.

👉 Smartphone bills are the easiest fixed cost to reduce

Start with a simulation👇
👉 https://network.mobile.rakuten.co.jp/

Related Articles