Last week with the removal of Local search from Plus, a hack to be able to secure reviews on both android and iPhone was also removed.
I have found a replacement that works very well for Android and takes the user directly to the review box. This URL has the added advantage of working in all desktop browsers. It does not work on iPhone.
1- Using Chrome on the desktop (this doesn’t work easily on Safari) Do a brand search on the business and retrieve a Local One Box for the Business.
2- Select the “Write a review” link and copy the URL from the URL field in the browser.