How to Prepare Your Phone for a Heartbeat Recording
Recording quality often depends on a few simple details rather than complicated settings. A clean, uncovered microphone, stable placement and quiet room can help produce clearer audio and prevent endless repeated attempts.
Written by HelloMommyHelloMommy editorial teamUpdated Published 2 min readCharge your phone and close unused apps
A low battery or incoming calls can interrupt a session. Charge the device, enable a mode that silences notifications and close apps that use the microphone or play audio.
Find the microphone
Microphone openings may sit at the bottom, top or near the cameras, depending on the model. Check the manufacturer’s instructions. Do not cover the relevant area with your finger, case or blanket.
Check the case and cleanliness
Temporarily remove a tight or damaged case. Surface dust can be wiped away with a dry, soft cloth. Do not insert a needle into an opening or use water or cleaning products unless the manufacturer recommends them.
Make a short test recording
Record a few seconds of your normal voice and play it back. This can reveal whether the microphone is covered or producing constant crackling. The test checks your phone, not its ability to record a heartbeat.
Prepare the surface and your position
Get comfortable so the phone will not slide. Soft fabrics may rustle loudly, so avoid loose folds. Do not press the device into your abdomen or use accessories that Bubbi does not specify.
After the session
Replace the case, review the recording, give it a clear name and make a secure backup if needed. Do not edit the sound to make it appear more medically credible.
Frequently asked questions
Do I need to remove my phone case?
Only if it covers the microphone or causes friction. Check the design of your phone model.
Can I clean the microphone with alcohol?
Follow the phone manufacturer’s instructions; without specific guidance, use only a dry, soft cloth.
Do I need an external microphone?
No. Bubbi is designed to use a compatible smartphone’s built-in microphone.
Sources
- Bubbi — How Bubbi works
- Harrogate and District NHS Foundation Trust — Listening to your baby’s heartbeat
This article is for general information only and is not medical advice. Always talk to your doctor or midwife about your own pregnancy.
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