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# How to Turn On Call Screening

### 
Before you start


* **Availability:** iPhone users in the US only, on most major carriers. A small number of carriers don't support the call forwarding Call Screening relies on — we can't confirm in advance which ones; you'll find out when you run the test call in Step 4 below. This affects roughly 5% of setups.
* **Call Screening replaces carrier voicemail** for unknown callers. If there's an automated number you rely on (pharmacy, bank, school), save it as a contact first so it keeps ringing through instead of being screened.

### 
Setup steps


**Step 1 — Start setup**
Open the Control+ app, go to Call Protection, and tap Continue setup. The app confirms your phone number first.
**Step 2 — Configure two settings on your iPhone**
Go to Settings → Phone, and set both:
* **Silence Unknown Callers → On** (don't choose "Ask Reason for Calling" — with that option on, Control+'s screening never gets the chance to answer the call)
* **Live Voicemail → Off**
**Step 3 — Activate call forwarding**
Back in the Control+ app, tap Dial the code (or copy it and dial manually) to send unanswered calls to Control+. Confirm the call when prompted.
**Step 4 — Run the test call**
Control+ calls you to confirm forwarding actually worked. Don't pick up — just let it ring through to screening. This can take up to a minute.
**Step 5 — Screening is on**
Once the test passes, Call Screening is active. Unknown callers now talk to Control+ first, and you're only notified when a screened call matters.

### Troubleshooting the test call

* If the test call doesn't reach screening, double-check that Silence Unknown Callers is on and Live Voicemail is off, then repeat Step 3.
* If forwarding still fails after retrying, your carrier likely isn't supported yet — contact support and we'll confirm.