Poseidon's kiss!

Firstly, every child is different. I worked at a preschool with 2-4 year olds for my work experience, they nearly all spoke in full sentences, the rest just put the main words of a sentence together. I was particularly impressed with a two year old girl. Secondly, many people allow their young children to answer their private phone, which has family and friends who would know the child anyway, and if anyone else rang they'd most likely just ask "can I speak to your mummy?" Or something of the sort. It's really not your place to judge.

That's pretty bad. Most kids can speak in simple sentences by age 2. Tell your parents to get your brother checked out by a professional.

33, you need to get your brother to the doctor as soon as you can because he is going to need speech therapy and it's best to start that early (especially before school)! My 3 year old nephew speaks full sentences (like most 3 year olds) but most people have a hard time understanding him, so he is now going to speech therapy. I would be extremely concerned if he's not speaking yet at 3. You should be able to have a small conversation with him by now. My other concern is; are your parents not taking him for his regular (usually a minimum of yearly) checkups to the doctor? They would be giving him needles, assessing his weight and height, and always assess the child's speech. There's a certain amount of words they should be saying at each age, and if they're not saying it by shortly after that age, they usually get them into speech therapy. You want to get this checked out, especially before he goes to school because he won't be able to communicate with the teachers!