This may be the first newbie I've seen with a question like this. Everyone else just doesn’t worry about it; they probably know how to analyze it on their own. Therefore, this topic will simply be lost in history.
In addition, the OP shouldn't save his session for a long time on the phone, since, as he described earlier, when another person accesses his account, various surprises may arise.
I can also advise the OP to keep her account more secure and to hide her email address.