We all love Series 40. It's simple, yet there's just a lot you can do for a feature phone OS. We got all the essentials, like custom themes, a wide array of web browsers, lag-free experience, and app support. Hopefully, HMD can bring the Series 40 back with some modern refinements. The current Series 30+, Smart Feature OS, and KaiOS are not as good as the Series 40. The KaiOS even lags, which is not a problem of Series 40. I just booted up my old Nokia C1-01 and Nokia C1-02 and I was like surprised my apps are still working fine. I can even find some cool J2ME apps online that works great, Sims and Monopoly were just some of those games that still works. The Google Map also still works fine, and even shows me live traffic. The KaiOS on the Nokia 8110 4G, on the other hand, is just a headache.