My son uses his phone to arrange to meet friends, to chat with friends, to learn to play chess, to play chess against friends and family, to watch all sorts of interesting documentaries...
My daughter uses hers to stay in touch with friends, she has friends all over the place as she spends most of her life doing dance or acting. She loves being able to send voice notes as she is dyslexic.
They both love being able to stay in touch with me when they are at their dads.
I am not naive about phones, but used well and moderately they can bring lots of positives too
This last week before starting secondary school my daughter arranged meet ups with different friends every day of the week.
My son used his phone to arrange and meet up with friends from a hobby in another town and to get himself there and back on public transport
They also have a great app on their phones for managing their allergies.
I have lots of conversations with them about risks and sensible use, but the reality is the real world is full of risks too.
Mine do too many hobbies to spend too much time on their phones, and they also love spending time with family too