Here's something trending you may or may not have seen-- it's called the textdoor neighbor trend.
People are texting the person who has the same phone number as them.. except the last digit. So if your phone number ends in 1234, your textdoor neighbors' numbers have the same area code and first three numbers but would end in 1233 and 1235.
Of course, the responses have varied because people are getting messages from strangers! In some cases, responses have been confused. In other cases, it's leading to real friendships!
But you always want to be careful about who you text because you never know who might be on the other end -- like in one case where the phone belonged to a seven -year-old girl.