The eclair-mobile wallet does not offer fine-grained coin control (coin selection) to the user, thus it makes sense to always swipe all available funds into a channel. Otherwise the change output could be tracked on-chain and hurt the user's privacy.

However, all version of eclair-mobile (including 0.4.8) create a change output, even if "Use all funds" is selected.

I could not reproduce the issue when all funds are sent to an on-chain address (not opening a channel)

Steps to reproduce:

• Have two coins in the eclair-mobile wallet
• Open a channel with all funds

Result:

• A change output is created (The amount of the change correlates with the selected fee rate)

Expected result:

• No change is created