For some people, having the right to search their phone would be like having the right to search their mind, but that aside, there are so many ways to overcome the need to carry your data physically with you across borders. If you’re motivated to do so it’s easy to find a way, which means that the vast majority of people whose privacy is being invaded aren’t even doing anything wrong, and the people who are doing something wrong just need to be slightly tech savvy to get around this.