Band (Frequency Band) Precautions
For customers using Android devices with docomo and SoftBank lines
It is necessary to check whether the band (frequency band) of the au line is supported.
What is the supported band (frequency band)?
A band is a number that represents the radio waves that can be used by your device. You can check if you can communicate with the number (band).
au line
About the band (frequency band)
Please check if your device supports the band (frequency band) used by au.
Bands (frequency bands) used by au

- Please note that the coverage area is limited if LTE band 18/26 and band 1 are not supported. Click here for details
How to check compatible bands
It is posted on the page of each mobile phone company such as docomo and SoftBank. Please check if your device supports the band (frequency band) used by au.
Bands (frequency bands) used by au
[docomo]
List of frequency bands for models that can be SIM unlocked
[SoftBank]
List of frequency bands for models that can be SIM unlocked
[au]
Implementation frequency band list of au mobile phones that can unlock SIM lock
[Y!mobile]
List of frequency bands for models that can be SIM unlocked
- For other telecommunications carriers, please see the website of each carrier or contact the support desk of each carrier.
(Reference) How to read the correspondence table

- What happens if it does not support LTE band 18/26?
-
Since the 800MHz frequency band, also known as the "platinum band," cannot be used, it may be difficult to receive radio waves in areas other than urban areas, indoors, or underground, or may be out of range.
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