Samsung Galaxy dual-SIM work line rules — per-SIM quiet hours

Quick answer

On Samsung Galaxy dual-SIM devices, use Hush to assign your work SIM a time-based quiet rule while keeping the personal SIM unchanged. Exclude Hush from sleeping apps under Battery and device care, or Samsung may suspend rules overnight. Pair per-SIM rules with a short work allowlist instead of device-wide Do Not Disturb.

Why Samsung users feel “double notifications”

One UI can surface the same event twice when both lines are active. Device-wide Do Not Disturb does not separate lines. Per-SIM rules in Hush target only the work SIM so personal calls and family SMS stay normal.

Step 1: Confirm both SIMs are active

Settings → Connections → SIM manager. Ensure both lines are on and labeled Work / Personal.

Step 2: Configure Hush per SIM

In Hush, map each slot to work or personal. Add a schedule on the work SIM only — typical start: weekdays 19:00–08:00.

Step 3: Samsung battery exclusion (critical)

Settings → Battery and device care → Battery → Background usage limits → Never sleeping apps → add Hush.

Without this step, Galaxy phones often kill background schedulers and your work line rings at 21:00 anyway.

Step 4: Allowlist and unknown callers

• Allowlist: manager, on-call colleague, one backup number.
• Unknown callers: block or voicemail on work SIM; keep personal SIM permissive if family uses unknown numbers.

Step 5: Avoid conflicting One UI DND schedules

Disable automatic Do not disturb schedules in One UI if Hush owns quiet hours. Two schedulers fighting each other is the most common “it worked once” bug.

Galaxy-specific tips

Dual messenger / work profile apps. Rules apply per SIM for calls and SMS; some work apps duplicate notifications — filter those apps on the work SIM in Hush notification settings.

Bixby Routines. Do not duplicate the same time window in Bixby and Hush; pick one system.