【au World Service】Tell me about the transmission speed reduction for World Data Flat
When using the World Data Flat, the transmission speed for sending and receiving data is reduced if the amount for sending and receiving data exceeds 3GB within 24 hours from the start of use of the World Data Flat, or if the monthly data allowance is exceeded.
Please see below for details.
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For au customers
New reservations acceptance for World Data Flat have ended on March 15th, 2024. If you have made a reservation before March 15th, refer to this page.
If you are using au Unlimited Data Overseas, your data transmission speed may be restricted if a large amount of data is used within a certain period (24 hours). For more details, please click here (in Japanese only) -
For UQ mobile customers
You can continue using World Data Flat after March 15th, 2024. Please refer to this page.
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If the data amount for sending and receiving data exceeds 3GB within 24 hours from the start of use of the World Data Flat.
If the amount of data transmission exceeds 3GB within a certain period (24 hours) from the start of use, the data transmission speed will be limited to a maximum of 1 Mbps until the start of the next 24 hours.
This restriction can only be lifted over time and cannot be lifted by purchasing a data charge.
The overseas usage app will display "It will be reset in 〇 hours and 〇 minutes" [あと〇時間〇分でリセットされます] allowing you to check the time when the restriction will be lifted.
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If the monthly data allowance of your contract is exceeded
If you exceed the monthly data allowance of your contract, the transmission speed will be reduced to 128Kbps.
Customers using au mobile phones can restore the transmission speed by charging data.
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For UQ mobile customers
When using overseas, if you exceed the monthly data allowance of your contract, the transmission speed will be reduced to 128Kbps, regardless of the plan you are subscribed to.
If you are using Data Saver mode, the sending and receiving speed will be up to 128Kbps when used overseas.
In order to avoid network congestion, we will reduce the speed of customers who have used more than 6GB in the past three days for the next day. For more details, please click here (in Japanese only).
【Reference】If you wish to use data transmission overseas without having speed reduction
Customers who wish to use data transmission overseas without having speed reduction should use Double World Data Flat.
- To use Double World Data Flat, you need to apply for "au Unlimited Data Overseas rejection optional / World Data Flat rejection optional" (free of charge).
Tap on the button above, on au Unlimited Data Overseas /World Data Flat [au海外放題/世界データ定額], select "Reject World Data Flat"［拒否オプションに申し込む］than tap on "Agree and Proceed" [同意して次に進む] to complete the procedure.
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