iPhones, android, windows all have their advocates and those who would not touch them with a barge pole
It need not even be expensive... not the best performer, but you can pick up a Huawei Y3 for as little as £30 and then just pay for usage we have one in the car as a backup and it is quite respectable
Apart from that talk to friends, neighbours and family, see what they are using and see how they look and feel for you
For instance is a large phone better for your hands and fingers than a small one, can you each all of the screen icons
... and of course they will have made all the mistakes you are going to make and can help with setup and problems
Then the even bigger nightmare of a contract or PAYG and with which ISP
It can be cheaper to buy a phone independently and then s SIM only deal... I saved £200 over the contract period by doing this
I get unlimited data, 30 Gb of which can be used with a tablet or computer for the same price as I get 1Gb of data on another provider with similar calls
.... and of course travel, I am on 3 so when I was in Norway recently there is no additional charge, yet others will charge you for calls an data which can be expensive
Like you so use a fraction of my calls and texts,
USwitch or similar can guide you on these
Memory is not the issue it used to be, some. Android phones can have additional memory added with micro SD cards, and even Apple have the ability to add memory