By practically, I mean have you always been able to contact people. I have not always found that this is the case. Phones have run out of charge, people in the garden without their phones and ring tones not as loud as landlines, three story houses, phone not heard etc. People do not always carry their phones around with them when at home.
Sorry, I should have made it more clear. I have had a mobile phone since they were like bricks and have updated them regularly, so I do understand their capabilities, though I must admit that I have always preferred to use my iPad, which I have also had, and updated since they first came on the market.
I tend to agree with you Calendargirl I mainly use my phone when out.