Call me

A trip to see my mum at lunchtime before our trip to England.
This is her collection of mobile phones and cases. All but one still works. One of them, the dark blue Nokia, she has just bought off of EBay, to replace the pink one, which getting a bit worn.
Two of them she still uses regularly to make calls and one still has some time on it.
She is an avid texter and uses her own style of text speak.
She is 83.