Momcozy BM04: problems, parts and running costs

Checked: 2026-10-12

Summary

The BM04 is a 5-inch dual-mode baby monitor with a direct camera-to-monitor link and app streaming over 2.4GHz Wi-Fi. Common owner questions, per Momcozy’s own support FAQ, concern pairing, VOX, night vision, sound and firmware updates. No independent test, owner discussion or verified US price was available for this model, so real-world reliability and value remain unconfirmed.

Common problems and fixes

Camera/monitor pairing failures — listed among the most common support questions for the BM04. [2]
VOX not detecting baby sound or sending alarms — listed among the most common support questions. [2]
Abnormal night vision — listed among the most common support questions. [2]
Weak or no camera sound — listed among the most common support questions. [2]
Volume switching randomly — listed among the most common support questions. [2]
Lullaby playing abnormally — listed among the most common support questions. [2]
Upside-down camera image after mounting — listed among the most common support questions. [2]
Camera disconnecting after firmware update — listed among the most common support questions; a user-installable firmware upgrade program exists for BM03/BM04. [2]
Monitor power, button or volume issues — listed among the most common support questions. [2]

Parts and consumables

SD card (32-256 GB, V10 speed class) — not included; required for local recording. App recording to the phone is the alternative. [5]

No other replaceable parts or consumables reported.

Yearly running cost

Not enough data. No annual running cost was published. The only added purchase is an SD card (32-256 GB, V10) for local recording. [5][13]

When it is a good buy

No verified US price was available for this model, so price thresholds cannot be set. [2][4][13]