ZK You seem not to have noticed on your dial aswell as numbers there are also letters. So for example for ‘hello’ you insert your finger in the 4 slot and rotate it for the h, then in the 3 slot for the e. Next you do the 5 twice for the two l’s, finally you put a band aid on your blister and insert another finger into the 6 slot for the o. (this is assuming your rotary phone has predictive text. Should it not and you must rotate each letter up to 3 times, the consequences do not bear thinking about!)