Signatures on Mobile devices - Gmail
Currently we are aware that the Official Gmail mobile apps for Android and iOS do not pull Signatures from Gmail or support HTML signatures so while Ancoris Signatures will update the signature in the Gmail Web UI this will not be reflected on mobile devices.
To manually set your signature on your mobile device, Please follow the steps in the following link:
Create a Gmail signature
https://support.google.com/mail/answer/8395?hl=en&co=GENIE.Platform%3DiOS&oco=2