The phone automatically presses

Hello, my phone automatically presses. When I unlock my phone, my phone to start presses anywhere. For example, i want to write a message and my phone to start press number. For example, I want to write “Hello, how are you?”, and my phone write(also I write and my phone write together) ” he12134llo, h454564o5465w are yo4445? Please, help me 🙁