I joined the company through connections, but after three months of internship, my salary has not increased.

sympathy! The following opinions are for reference only:

Almost all interns have low salaries and are not enough to spend. Even if you have officially joined the job, the starting salary is very low.

Arrange your expenses reasonably, avoid unnecessary expenses, and learn to manage money. You can get some part-time jobs and earn some extra money.

your goal now is to exercise your skills, not to raise your salary. As long as it is basically enough to spend.

don't rashly raise the issue of salary increase, because: the company's benefits are really bad, and it's useless to raise it; You came in through connections, and your relatives have already taken care of you. Otherwise, you may not have this position at all, so don't let others be embarrassed. It is the same for any company if it is impossible to raise wages during the internship period and just after joining the company.

Don't let your salary affect your mood. Keep working hard and practice your skills.

If you really want to increase your income, you can suggest to the leader that it is difficult for you to run a business at first, and there are many opportunities for exercise, so you may make a fortune in the future.