7 sourced reports, with what to check before you buy. Each one links to the page it was reported on.
Costly or dangerous
Redmi Buds 6 Lite one earbud stopped charging after a month (owner, Slovak retailer review)
A buyer reports one earbud stopped charging after a month on a replacement unit, and the first unit lasted about a year.
What to check. A single earbud refusing to charge is a known failure mode; clean the charging contacts and try the reset, but budget for a replacement or warranty claim if it persists.
Redmi Buds 6 Lite stopped connecting to any phone after 4 months (owner, Ukrainian retailer review)
A buyer reports that after 4 months the earbuds stopped connecting to the phone and no device sees them; the listed drawback is 'Швидко зламались' (quickly broke).
What to check. A total loss of pairing/visibility is a hardware failure, not a settings issue; expect to use the warranty/after-sales repair path rather than a fix at home.
Redmi Buds 6 Lite randomly disconnects (owner, Slovak retailer review)
A verified buyer reports random disconnections, matching the German forum report of mid-session unpairing.
What to check. Random disconnects appear across multiple owner reports; try the reset procedure and keep the phone close, but treat it as a recurring behavior rather than a one-off.
Redmi Buds 6 Lite unpair mid-use while watching YouTube or listening to music (owner, German forum)
A German owner reports the earbuds unpair mid-use (YouTube, music) and audio falls back to the phone speaker, happening twice within 5 minutes.
What to check. Expect occasional mid-session disconnects; a factory reset (10s button hold in case) is the manufacturer's suggested fix, but if it recurs the unit may need after-sales service.
Xiaomi official FAQ acknowledges one earbud silent or cannot connect on Redmi Buds 6 Lite
Xiaomi's own support FAQ addresses a single silent/unconnectable earbud, and if reset fails directs the user to after-sales inspection and repair.
What to check. The manufacturer itself publishes a troubleshooting path for a silent one-side earbud, confirming it is a recognized issue; reset first, then use the warranty if it persists.
Redmi Buds 6 Lite bass drops out when ANC is on at higher volume (owner, Slovak retailer review)
Owners report the bass drops out when ANC is enabled at higher volume; the workaround is turning ANC off, and one owner expects a firmware fix.
What to check. This is a firmware/ANC quirk, not a hardware defect; if you listen loud with ANC on, expect bass dropouts until a firmware update lands.
Xiaomi official FAQ acknowledges intermittent sound or noise on Redmi Buds 6 Lite
Xiaomi's official FAQ addresses intermittent sound/noise, attributing it to battery, distance, obstacles, or interference, and ends with after-sales inspection if unresolved.
What to check. Intermittent audio is acknowledged by Xiaomi; try full charge, closer proximity, and a reset before concluding it is a defect.
These reports come from the pages linked under each item: owner forums, repair guides and workshops. They are not a diagnosis of any one unit, and a careful check of the one you are buying still applies.
Text from the Kriko Wireless earbuds catalog, version 0.1.4, under the CC-BY-SA-4.0 license.