Not sure if vionics are available in the UK, but they are a great brand for flat feet, heels or no heels because they have an exaggerated arch. After foot surgery I had to stop wearing heels for flat feet and the vionics orthotics saved me! They have shoes and heels that have all lasted me a solid 5 years of regular seasonal wear.

I have always had remarkable luck with the pixels. I am rough on my phones and my 4a has survived a number of beatings. My pixel 2 only finally died when it got stepped on by a horse on a concrete floor. Never had a particularly good case on them either.

Honestly you can't have a 10 year phone anymore because they stop supporting updates. 5 years is a good run in my opinion.