When you set up real-time sermon translation, one of the first decisions you'll face is how listeners receive the translated content. The two main options are FM headsets and phone-based access. Most churches offer both — but understanding the strengths of each helps you set expectations and plan your setup.
FM Headsets: The Case for Screen-Free Worship
FM headsets deliver the translated sermon as audio through a small earpiece or over-ear headset. A short-range FM transmitter broadcasts the AI-generated speech, and listeners tune in like a radio station.
Pros
- No phone required. Many congregants — especially older members — prefer not to use their phone during worship. Headsets let them listen without a screen.
- Zero Wi-Fi dependency. FM works via radio waves. If your church internet goes down, headsets still work perfectly.
- Immersive experience. Listeners can close their eyes, participate in worship, and simply hear the sermon in their language. It feels closer to a natural worship experience.
- Simple for the listener. Put on headset. Listen. No login, no app, no QR code scanning.
- Works for the hard of hearing. Many hearing-impaired congregants already use similar FM loop systems. The sermon translation can double as an assistive listening device.
Cons
- Hardware to manage. You need to purchase, charge, and maintain a set of headsets. Someone needs to hand them out and collect them.
- One language per channel. Each FM frequency carries one language. If you need three languages, you need three transmitter channels and listeners need to know which frequency to tune to.
- No text option. If a listener wants to read along rather than listen, FM doesn't offer that.
- Upfront cost. Headsets range from $5-25 each depending on quality. A church providing 20-30 headsets is looking at a few hundred dollars in hardware.
Phone Access (PWA): The Case for Flexibility
Phone-based access typically works through a Progressive Web App (PWA) — a web page that looks and feels like an app but requires no download. Listeners scan a QR code and see the translated sermon scrolling on their screen in real time.
Pros
- No hardware to manage. Everyone already has a phone. No headsets to buy, charge, or collect.
- Text and audio. Listeners can read the translation as scrolling text, listen to AI audio, or both. They choose.
- Multiple languages simultaneously. Each listener selects their language on their own phone. No channel-switching needed.
- Adjustable text size. Listeners with vision difficulties can increase the font size. Not possible with audio-only headsets.
- No app download. A QR code opens a web page. Works on any phone with a browser — iPhone, Android, old or new.
Cons
- Requires Wi-Fi or cell signal. The phone needs a connection to receive the translated content. In churches with thick walls or weak signal, this can be unreliable.
- Screen during worship. Some church cultures discourage phone use during services. Having phones out — even for translation — can feel at odds with the atmosphere.
- Battery drain. A phone streaming content for 45+ minutes will drain battery, especially with the screen on.
- Not everyone has a phone. Children, some elderly congregants, and visitors who forgot their phone won't have access.
Our Recommendation: Offer Both
Most churches find that offering both options works best. Here's a practical setup:
- Keep 15-20 FM headsets at the welcome table. Greeters offer them to anyone who wants one. Collect them after the service.
- Place QR code cards in the pews or on chairs. A simple card that says "Scan for sermon in Spanish" (or whatever your target language is). Anyone with a phone can self-serve.
- Brief Sunday morning announcement: "If you'd like to follow today's sermon in Spanish, grab a headset from the welcome table or scan the QR code on the card in your seat."
Over time, your congregation will settle into their preferences. Some listeners will always prefer headsets. Others will always use their phone. The point is that everyone has a way to fully participate in the service.
Accessibility Matters
One thing worth noting: both options serve the hard of hearing, but in different ways. FM headsets provide amplified audio directly to the ear. Phone access provides real-time captions that function as live closed captioning for the sermon.
For churches that want to improve accessibility, sermon translation does double duty. It's not just a language tool — it's an accessibility tool. Every caption-reading congregant and every headset-wearing listener gets a better experience, regardless of which language they speak.
See how the Unity Edge supports both FM headsets and phone access, or view pricing to learn what's included.