1. Highlight the desired signature and long-press it. Tap Copy.2. Open the Outlook App on your device. Tap the three lines in the upper-left.3. Tap the Gear Icon in the bottom left4. Tap the Signature Setting.5. Delete any signature there, then long-press the box and tap Paste. Note: pictures cannot be pasted into the Outlook App's signature.6. Finally, tap the back arrow to save your changes.