_device_can_upload() │ WP 3.4.0

Tests if the current device has the capability to upload files.

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

No Hooks.

Returns

bool. Whether the device is able to upload files.

Usage

_device_can_upload();

Changelog

Since 3.4.0 Introduced.

_device_can_upload() code WP 7.1

wp-includes/functions.php 
function _device_can_upload() {
	if ( ! wp_is_mobile() ) {
		return true;
	}

	$ua = $_SERVER['HTTP_USER_AGENT'];

	if ( str_contains( $ua, 'iPhone' )
		|| str_contains( $ua, 'iPad' )
		|| str_contains( $ua, 'iPod' ) ) {
			return preg_match( '#OS ([\d_]+) like Mac OS X#', $ua, $version ) && version_compare( $version[1], '6', '>=' );
	}

	return true;
}