Seeking HR's job-seeking SMS mode.

It is recommended not to send text messages. It is unnecessary, and the other party will feel abrupt or disturbed. If the company thinks you can do it, it will be accepted. If it thinks you can't do it, it's no use sending it. Maybe you want to fight for it by SMS, then: Hello, Manager X, I'm X who came to your company for an interview on X. I really hope to have the opportunity to work with you and wish you a happy job.