If you don't mind a Helio G99 you can still get the Alldocube iPlay 50 mini. It has a SIM slot. Definitely not the best tablet in this class, but it meets the requirement.
According to a new report, Huawei is rumoured to be entering the compact flagship soon to rival recent releases by Apple, Lenovo, RedMagic and Xiaomi, among others. Backed by an 8.8-inch OLED display, Huawei's alternative will target those looking for a lightweight and portable tablet rather than gamers.