The Map Display on Mobile Link has a bug when the Heart Rate goes to 3 digits. Below are screen captures at 95 bpm and 103 bpm. As you can see the 103 bpm wraps the 3 onto the second line and the other details are not visible. In fact, it is not the number of digits and likely just a total space permitted on the line as I noticed that 111 bpm works just fine and does not wrap.