I am keeping my dual sim 10 key phone, but only leaving my primary SIM in that phone. My smartphone has my secondary SIM and I am using it primarily for data to my laptop. In a year or so when I'm ready for a new device I'll probably move to a dual SIM smartphone. I also turned off every single notification I could find, and as my phone finds new ways to blink and buzz at me I research new ways to turn off the notifications. Telephone calls can go through on either device, but if I am running out for a quick errand I'm more likely to grab the dumb phone before I grab the smart phone. The smartphone doesn't have facebook, twitter, or instagram installed. It also doesn't have any shortcuts on the home screen except for my address book, calendar, camera, and phone. I can text with the 10 key keypad, but it's a pain, so other than my stock replies I don't text from that phone.