My iPhone 7s Plus with a LifeProof case is still going strong in nearly mint condition (despite the battery at about 85% capacity). Apple's building phones that last longer.
Also, I can't think of too many new apps I've installed lately or performance issues with my current ones. Hopefully at some point, the market will reward Apple for building reliable phones (I say that knowing about all the repair bulletins they've released these past few months...)