Yes, BodyGuardz screen protectors can generally be used in conjunction with a phone case. BodyGuardz designs their screen protectors to be compatible with most phone cases available in the market. The intent is to provide optimal protection for the screen while still allowing the use of a variety of cases that enhance the overall safety of the device. However, it is essential to consider the specific model of phone and case being used, as some cases may have edges or designs that could interfere with the screen protector's fit or functionality. For the best experience, users are encouraged to check the product descriptions on bodyguardz.com to ensure compatibility or to review any recommendations for specific case types alongside their screen protector. This will help ensure that the screen is properly protected while still benefiting from the added protection of a phone case.