Fileso can connect to an S3 bucket so you can inspect objects and transfer files from an iPhone or iPad. This is useful when a document, media file, or exported backup is already in object storage and you do not want to retrieve it through a desktop first.
Collect the bucket settings
You need the bucket name, region, and credentials with permission for the operations you plan to perform. For a compatible storage service, you also need its S3 API endpoint. A public website URL or CDN address is not necessarily that endpoint.
S3 uses object keys rather than ordinary disk directories. The folders shown by a file browser represent prefixes in those keys. Keep that distinction in mind when checking whether an object was uploaded to the expected location.
Add the S3 connection
- Choose Add Connection in Fileso and select S3.
- Enter Bucket, Region, Access Key ID, and the secret key.
- For compatible storage, fill in Endpoint using the service’s API address. For AWS, use the configuration appropriate to your bucket.
- Check Use Path-Style Address against your provider’s requirements.
- Save, browse the bucket, and download a small object.
- If uploads are needed, upload a disposable test file and verify its key and contents.
Create a connection for the bucket you intend to use. Being able to sign in does not mean the credentials can list every bucket in the account.
Diagnose an access or signature error
Check the region and endpoint together: credentials can be correct while a request is sent to the wrong service address. Review whether the key can list the bucket and read the selected object. Uploading and deleting require their own permissions.
If only one operation fails, investigate that permission rather than repeatedly replacing the whole connection. Avoid copying keys into screenshots or shared troubleshooting notes.
Is S3 a synchronized folder?
Browsing a bucket does not set up automatic two-way synchronization with your iPhone. Treat uploads and downloads as explicit transfers. When you need a file offline, save it locally and test that local copy. For an important downloaded archive, a published checksum can provide an additional content check.
Related guides
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