The ornamental design for stand for a mobiletelephone, as shown and described.
1. Stand for a mobile telephone
1.1 : Front
1.2 : Back
1.3 : Right
1.4 : Left
1.5 : Top
1.6 : Bottom
1.7 : Unfolded
1.8 : Perspective
The design is a stand for mobile telephone shown by front view (1.1), back view (1.2), right view (1.3), left view (1.4), top view (1.5), bottom view (1.6), reference view showing unfolded state (1.7), and reference perspective view showing the state of use (1.8);
The mobile phone shown in dotted lines in FIG. 1.8 illustrates environmental subject matter that forms no part of the claimed design.