Yes, you can use multiple bonuses, but not simultaneously. Sites only allow you to have one bonus active at a time. Until you finish its wager or its duration expires, you will not be able to use another. In some casinos, if you claim more than one simultaneously, they will place you in a waiting queue. Your account is synchronized between your desktop and mobile, so it’s not possible to “lie” the system and receive twice the best mobile casino bonuses.