Wrist
If you were concerned that individuals might become so frail that they would find it difficult to even hold up a phone, you should know that the issue is not with holding the phone up. The thing we should be concerned about is swiping the fingers. An October 2021 Washington Post article on the subject promoted the phrase "smartphone pinkie" for the impact of excessive phone use on the digits, but fortunately that doesn't seem to have caught on. The peculiar ways that fingers move to scroll across sites on smartphones have been linked to conditions such as tendonitis, chronic pain, and even loss of use of the index finger and thumb, a disease nicknamed "trigger finger."
Duc Nguyen, an orthopaedic physician at John Hopkins University, recommended a variety of treatment options, including frequently changing the way the smartphone was held, using handheld devices, or getting a pop socket to distribute the weight more evenly across the fingers. However, it should be noted that according to Ventura Orthopedics specialist Josh Gluck, the ulnar nerve is not related to the fingers, therefore protecting the fingers and wrist won't put Cell Phone Elbow at risk of worsening.