I've come across with this idea post "WhatsApp Integration". It seems like the Product team is not currently looking to develop this feature, however, if any of you were interested in this feature please give the linked post an upvote and leave your use-cases with as much detail as possible!
Hey @L_P , I didn't find an idea post around SMS integration. However, some users shared their SMS integration experiences in here- Text messaging SMS converasations that might help you.
From the linked descriptions, I am not sure if these integrations allow you to create any of the records from the SMS though. @DAnaGuiloff and @Tnichs , do you know have experience with these apps?