Not up to the task
It’s become quite common in the last few years for grown-up children to buy their parents a mobile phone. They want to make keeping in touch a little easier, and they also want to open up their parents’ world to the wonders of texts, Facetime, or just Candy Crush. It doesn’t always go smoothly.
In this case, the mom in question has bought her own new phone, but I think it’s going to take a while before her son gets a coherent sentence out of her. My gran texted me in capitals for the whole first month she had a mobile. It made me laugh a lot, and she didn’t understand what I found so funny!