This exactly. I don't know how ANYone can do without a smartphone in 2025. It's needed for soooooo many things. DH and I didn't have one til mid 2020, (got one when Covid kicked in, cost £75 that's all,) and don't know how we did without it. I have upgraded a bit now to one that cost £275, and I would never spend over a grand on one like some people do...
But I use it for everything. Calendar, camera, calculator, bird finding app, maps, whatsapp, stargazing app, emails, Twitter/X, Facebook, TikTok, YouTube, sat-nav, Google searching/internet browsing, weather app, video calls, fitness app that counts my daily steps and heart points, banking, storing tickets, shopping online, taking videos, watching tv shows, booking and cancelling appointments with the GP, (and the dentist,) and texting - and much more! (And making phone calls of course!)