Is phone snatching a real thing?

Recent Update:
Just got back from my trip to London and happy to report that my phone is still in my possession!
During my visit, I decided to invest in a lanyard that I attached to my crossbody bag strap, and it worked like a charm. I also made sure to be mindful of my surroundings when using my phone in public.
As a Scandinavian, I never really encountered this issue back home, so it was a bit of a concern for me while visiting London.
With all the stories circulating about phones being snatched from people’s hands on the street, I was understandably worried, especially since I enjoy taking pictures.
Do you think purchasing one of those phone straps would be effective, or should I simply exercise caution?
Question: Are phone thefts common in London?
Update:
Just got back from London and thankfully still have my phone in possession! I decided to use a lanyard attached to my crossbody strap to keep my phone secure and didn’t encounter any issues. In addition, I made sure to be mindful of my surroundings when using my phone in public.
As a Scandinavian, I’m not used to this issue, so it’s a valid concern for me.
I will be traveling to London soon and have come across several stories of phones being stolen directly from people’s hands on the streets…
Since I enjoy taking photos, this worries me 🫣. Do you think using a phone strap could help prevent theft, or should I just be extra cautious?