I purchased the entire kit to do my battery replacement and found the opening tool was not capable of opening my One Plus 5t phone. I tried the tool for at least 30 minutes and couldn’t even get it started. Luckily I had a set of “plastic tools” for removing door panels from cars while doing stereo work. These tools have nice sharp points and are much longer and thicker, providing much better grip and leverage. With these tools, I had the back off the phone in just a few minutes. All the rest of the process was easy to follow and everything worked out great.