Currently there is a limitation of uploading a file attachment size to max of 10 MB. SInce SPO can accept upto 250 MB per file in a list item, it makes sense to increase the attachment size in PowerApps to 250MB.
We've removed the limit for attachments to support higher upload limits, as they become available by different connectors. It became available in 6.4 - Released version 3.21064 - Release Notes | Microsoft Docs
Hope this helps.
The attachment control's 'maximum attachment size' property is now indeed without limit.However, please note it is up to the developer to make sure the right value is set in case there is a limit on the target location. So in case of a SharePoint list the SP limit is 250 MB which you have to assign to the control to make sure the control works correctly as the control doesn't know the limit of any target location (see screenshots).
Hello @chmoncayMSFT .
Despite the fact that the limit has been removed, when I add a connected form to a SharePoint list and try to upload a document, it does not load if the file it exceeds 75MB.
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