can i share my membership on my other account?

Your memberships are bound to your account. If you have a Microsoft Account with your memberships, you'd need to sign in to your mobile device with the same account in order to access any of the memberships benefits. Any other account(s) you've created would only enjoy access to those memberships while signed into the home console of your main account.

Regards,
Jason

Yeah, I'm always signed in to both. I hate typing chat messages on the console itself so I generally send/receive messages in the Xbox mobile app while I keep gaming on the console itself.

Exception being XCloud. Pretty sure if you're streaming a game to your mobile you're going to be signed off your console (since you're technically logging into another console in the cloud at that point in time).

- Jason

can i be signed in on console and mobile at the same time on the same account?

the gold subscription was paid for and used on my account. there are other profiles on my xbox one. but they dont share the gold membership

so my Xbox live has ran out and instead of paying for me and my bros is there a way that we can share one Xbox live membership on 2 separate accounts on two separate consoles ? Any help would be appreciated thanks.

If you are both on an Xbox One then the answer is yes. Simply set the account that has the Gold membership as Home on the second console and the membership will be shared to any other tags on that console. The same applies to games as well