I had the predecessor Smarttab2. I liked down. The 3 Series is much faster and has a more stable wireless connection. In addition, now a slot for SD cards and as usual the SIM card. I have already several times on the way used when no wireless was available. All functions of the tablet are stable - the predecessor is like crashed times. The switch to the new model has definitely paid off. A little disturbing start the Vodafone app that you have silenced for now. Recommendation Good value and delivery was really good.