What are the opening hours for Smarter Support? Smarter Support phone line is open Monday to Friday 9 AM - 5:30 PM GMT. You can also contact Smarter Support on our Whatsapp business number 07394210876 if you are in the UK or EU or the US. Dinique March 08, 2022 09:44 Follow Have more questions? Submit a request 0 Comments Please sign in to leave a comment.