Planned obsolescence

So here is the thing: -How do I evaluate a smartphone based on its "longevity"? Context: -I've had this same Moto X2 for almost 5 years now, and I plan on buying a new smartphone in May-Jun. I've separated around 350 US$ for the purchase, but I'm having a hard time learning how exactly to...

Hello everyone, after 13 years of use my Siemens S65 cell phone finally started dying (true story) and I'll have to look for a new phone. I think I have only one major requirement for the new phone, and yet it's not easy to fulfil - I want it's quality and durable. I'd rather buy another used...