Use the Samsung Setting That Matches the Symptom
Samsung battery optimization can be relevant when Ledger Live works while visible but loses activity after going into the background. The current app is Ledger Wallet. A device that never connects in the foreground still needs transport and permission checks before battery settings become the main explanation.
Record the Galaxy model, Android and One UI versions, current app release and exact trigger. A screen lock, another app opening and physical USB detachment can lead to similar messages through different mechanisms.
Review Sleeping and Deep Sleeping Lists
Samsung’s sleeping-app instructions describe Background usage limits and its app lists. Search Settings for that control if the menu differs on your model. Check whether the verified Ledger app appears in Sleeping apps or Deep sleeping apps.
Deep sleeping is a stronger background restriction than simply seeing the app in a recent-apps list. Samsung’s application-management reference explains how these categories affect activity. The exact result still depends on the phone’s software and the task being attempted.
Make One Targeted Comparison
- Complete ordinary pending tasks and ensure no Ledger OS installation is progressing.
- Establish a working foreground session with compatible hardware.
- Record the app’s current sleep and per-app battery treatment.
- Where appropriate, remove that app from an identified restrictive list or review a targeted exception.
- Repeat the same harmless foreground-to-background transition and compare the outcome.
Do not turn off power management across the phone. If you choose a Never sleeping exception for an actual need, assess its battery effect and whether the change improves the specific symptom. It is not proof that Bluetooth will remain connected permanently.
Distinguish Bluetooth From a Wired Power Loss
For a Bluetooth-capable Ledger, inspect permission, hardware availability and the point at which the phone loses the session. For Nano S Plus, a wired connection and host-supplied power are required. It has no Bluetooth and no internal battery.
If Nano S Plus turns off when the connection fails, investigate cable, connector and USB host behavior. Moving an app between sleeping lists cannot repair an intermittent conductor. If the hardware stays on but only the app session disappears, the software-state comparison becomes more relevant.
Verify What the Changed Setting Achieved
Record whether the app remains responsive, whether the device must reconnect and whether the intended operation completes. A change in one result does not establish that account refresh, signing and firmware maintenance all have identical background behavior.
Keep a progressing hardware OS update in its supported stable session. For a transaction approved before a lost connection, inspect its chain hash or provider reference before another attempt. A background restriction does not cancel an action already submitted.
If an exception makes no difference, record that negative result and reconsider the branch. A reliable foreground connection that fails only when the Ledger locks needs a different assessment from an app placed in Deep sleeping apps. Avoid accumulating permanent exceptions after comparisons that did not improve the actual problem.
Samsung Battery Questions
Should I grant every permission along with an exception?
No. Bluetooth discovery, USB access and camera use each have their own purpose. Enable only the permission relevant to the chosen feature and current Android workflow.
Would reinstalling remove the restriction?
Do not rely on that assumption. Reinstallation can remove useful local data while the system may still apply background controls. Identify and inspect the actual setting first.
Where should app updates come from?
Use the official Google Play listing. A modified battery-fix APK adds an unrelated software origin to investigate. No battery or pairing repair requires entering recovery words into your Galaxy or sharing the hardware PIN.