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ESIM activation and troubleshooting

To maintain phone and SMS connectivity in Japan using a Russian SIM while avoiding expensive roaming data charges,…
To maintain phone and SMS connectivity in Japan using a Russian SIM while avoiding expensive roaming data charges, disable 'Data Roaming' on the Russian SIM and use a local/travel eSIM for data. This prevents unnecessary data usage while keeping the primary line active for calls.
Users of Georgian Magti eSIMs have reported connection issues in Japan after the 3G network shutdown in April 2026
Users of Georgian Magti eSIMs have reported connection issues in Japan after the 3G network shutdown in April 2026. A workaround involves enabling VoLTE on the device and checking the 'Standard roaming internet tariff' box within the Magti app, as simply enabling roaming is often insufficient.
If your GLOBAL SIM For Japan (docomo) is not working, check APN settings and consider visiting a phone service center…
If your GLOBAL SIM For Japan (docomo) is not working, check APN settings and consider visiting a phone service center in Bic Camera for assistance. This service may incur a fee (around 3000 JPY) and can involve waiting times.
To delete an eSIM profile on an iPhone, go to Settings -> Cellular -> Tap on the specific eSIM plan -> Remove Cellular…
To delete an eSIM profile on an iPhone, go to Settings -> Cellular -> Tap on the specific eSIM plan -> Remove Cellular Plan. Resetting network settings does not remove the eSIM profile itself.
For purchasing an e-SIM for Japan, Trip
For purchasing an e-SIM for Japan, Trip.com is a recommended provider. Activation can be done at the airport before departure, ensuring connectivity upon arrival.
Troubleshooting assistance needed for activating a Yesim eSIM purchased for Japan
Troubleshooting assistance needed for activating a Yesim eSIM purchased for Japan. User is unsure if activation requires a Wi-Fi connection in Japan or if it can be done remotely from Russia.