Tokyo 5 Days Couple: SIM/eSIM Guide

Five days in Tokyo as a couple is enough to cover a couple of neighborhoods properly — Shibuya and Shinjuku, teamLab, maybe a day trip out to Kamakura — without needing to rush. Whether you share one connection or each carry your own comes down to how often you expect to split up during the day.

Sharing vs. going independent

A shared pocket WiFi covers both phones from one rental, so you’re paying once instead of twice — a solid default if you’re mostly moving together between neighborhoods. The catch is the usual one: whoever isn’t holding the router loses signal too, which matters more in a city as spread out as Tokyo if one of you wants to duck into a department store while the other keeps walking.

Two individual eSIMs cost more in total but remove that dependency entirely — worth it if your itinerary has you splitting up for shopping, work calls, or just exploring different neighborhoods at your own pace.

How much data does a couple actually use in Tokyo?

App / activity	Approx. data use
Google Maps navigation (subway + walking)	~50-100MB per day of active use
Google Translate (camera mode, menus)	~20-50MB per day
Photo/video sharing between phones	~100-250MB per day
Social media browsing (per person)	~500MB-1GB per hour

Tokyo’s dense subway map means more active navigation than a smaller city, but the numbers stay modest — a couple sharing one pocket WiFi typically lands around 2-4GB/day combined, well within any of the unlimited plans below.

Recommended options

For a 5-day trip, the 4-day pocket WiFi rental undershoots slightly and the 7-day tier overshoots by two days — either works, and the per-day cost difference is small. On the eSIM side, Mobal prices its 5G Unlimited tourist eSIM by the exact day, so a 5-day plan covers exactly 5 days per person.

Tokyo-specific tips

Tokyo’s subway system (Tokyo Metro and Toei combined) runs mostly underground, and signal can drop briefly between platforms during transfers — this affects every provider equally and isn’t worth planning around beyond expecting a few seconds of lag when you resurface. If your day trip takes you out to Kamakura, coverage stays solid the whole way on the JR lines; the only patchier moment is inside some of the older temple grounds themselves, where thick stone and dense trees can weaken signal briefly.

Extending your trip, or traveling with kids?

• ✓ See our Tokyo-Osaka family guide
• ✓ Solo instead? See our Tokyo 7-day solo guide

Still deciding between eSIM and physical SIM in general? See our full eSIM vs Physical SIM comparison.

Frequently Asked Questions

Is it cheaper to share one pocket WiFi as a couple in Tokyo?+

Yes, in total cost — one rental covers both phones instead of paying for two separate SIMs or eSIMs. The trade-off is that you both need to stay within range of whoever is carrying the router.

Will the subway affect our connection?+

Tokyo Metro and Toei subway lines run mostly underground, so brief signal drops between platforms during transfers are normal — this affects every provider equally rather than being specific to one.

Does a day trip to Kamakura need special planning?+

Not really — JR line coverage stays solid the whole route. The only spots with weaker signal are inside some older temple grounds themselves, due to thick stone construction and dense tree cover.