Managing Storage Go to Settings > General > iPhone Storage to see which apps are taking up the most room. Ensuring your phone syncs with Apple’s time servers ensures that the security certificates are valid and recognized.
Free Up Space Automatically to Fix iPhone Download Issues
This is often overlooked but is a surprisingly common fix. Unlike streaming a video, which buffers, an app download needs a consistent handshake with Apple's servers.
If you are using public Wi-Fi, the network might have a web portal or restrictions that block App Store access. Storage Space and Offloading Your iPhone needs sufficient free space to stage and install an app.
Enable Auto Free Up Space for iPhone Downloads
You might see a "Could not sign in" message if your account details are outdated or if there is a billing issue. It is possible that "Installing Apps" is turned off under "Allowed Apps," which would prevent any new installation regardless of the network quality.
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