Mobile phone software that can send text messages to yourself.

I don't know what system mobile phone you are using.

There is a software in WM system called wireless alarm clock.

There is a function that can send short messages regularly.

You fill in your number in the number column.

Then the mobile phone will automatically send a text message to the number you filled in at that time at your scheduled time.

That is, texting yourself.

S60v3 also has such software, but the name is forgotten.

I haven't used S60v5, so I don't know.