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Electronics

Samsung Galaxy S23 Ultra. Model name - SM-S918U

4 source-linked failure reports. Most reported: Fire / ignition. Typical failure around 2.3 yr.

Reliability signal — · Insufficient data · data confidence Very Low

4 confirmed failure reports

Reliability summary

What is likely to go wrong, when it happens, and how expensive it can be — from source-linked failure reports. Counts are reports in our database, not a population failure rate.

Reliability signal

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4 confirmed failure reports · Insufficient data · Data confidence: Very Low

Need at least 5 confirmed failure-signal reports before showing an A–F grade.

Most common issue
Fire / ignition
Typical first failure
2.3 yr
Median of confirmed reports with timing
Median repair cost
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Reported costs only · market varies
Highest reported repair
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Not a quote · costs differ by country

What breaks?

Failure types

Click a type in the reports section below to filter.

  • Fire / ignition2 · 50%
  • Overheating1 · 25%
  • Leak1 · 25%

When does it break?

Failure timing

Months after purchase, using reports that included timing.

What does it cost?

Reported repair costs

Distribution of owner-reported repair costs— not a quote or guarantee. Labor and parts prices vary by country.

No reported repair costs yet for this model.

Median months to failure

27.5

Failure reports

4

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Median repair cost

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Still recommend

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% repaired

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% mfr warranty

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% extended warranty

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% support helpful

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Use these reports as a risk signal, then check current listings before you buy.

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What breaks?

What breaks? · reports

Overheating

Telephones or Telephone Accessories (550)

Government / agencyIndexed Oct 28, 2026Source-linkedVerify source — SaferProducts.gov incident

SaferProducts.gov consumer incident report 20110815-111F0-2147476226. Severity: Incident, No Injury. Matched catalog product: Samsung Galaxy S23 Ultra. Model name - SM-S918U. Source model text: SCH-U450, SKU: SCHU450MRV.. Incident: This incident happened in the morning. The phone had been charging overnight, as I do every night, and I went to go unplug the charger from the phone when I realized the phone was incredibly hot. It was so hot that I could not even try to hold it or I would be burned. The phone eventually restarted itself, as I believe it overheated. A few days later, this incident happened again as I was entering the car. Luckily, I had my phone in my car's cup holder. Again, the phone was incredibly hot to the touch. If the phone would have been in my pocket or on my person, I would have been burned.

UnverifiedEvidence ★★★★☆
View report details

Months until failure

Not stated

Repair cost

Not stated

Repaired

Not stated

Manufacturer warranty

Not stated

Extended warranty

Not stated

Support helpful

Not stated

Would recommend

Not stated

AI extraction confidence

86%

Verification status

Unverified

Evidence quality

★★★★☆ (4/5)

Discussion

Leak

Refrigerators (276)

Government / agencyIndexed Oct 28, 2026Source-linkedVerify source — SaferProducts.gov incident

SaferProducts.gov consumer incident report 20201008-1F7F4-2147369346. Severity: Incident, No Injury. Matched catalog product: Samsung Galaxy S23 Ultra. Model name - SM-S918U. Source model text: RF268ABWP. Incident: I am wanting to report my Samsung French Door refrigerator. The manufacturer date is September 2010. I purchased this in November 2011. This fridge has had issues since day 6 of owning. Samsung is aware they have issues with this product and will not recall it. The ice maker up top freezes and also leaks constantly. The leaking has caused mold on the inside and outside of the ice maker. The compressor makes a winding noise. The food will be up to temp one day and then the next day the thermometers will read up to 20 degrees warmer than the unit is displaying! This has caused multiple food items to spoil and go bad. We have had several tummy issues due to the unsafe and unknowing temperatures.

UnverifiedEvidence ★★★★☆
View report details

Months until failure

Not stated

Repair cost

Not stated

Repaired

Not stated

Manufacturer warranty

Not stated

Extended warranty

Not stated

Support helpful

Not stated

Would recommend

Not stated

AI extraction confidence

86%

Verification status

Unverified

Evidence quality

★★★★☆ (4/5)

Discussion

Fire / ignition

Microwave Ovens (264)

31 months

Government / agencyIndexed Oct 28, 2026Source-linkedVerify source — SaferProducts.gov incident

SaferProducts.gov consumer incident report 20240815-26BAB-2147337201. Severity: Incident, No Injury. Matched catalog product: Samsung Galaxy S23 Ultra. Model name - SM-S918U. Source model text: ME21M706BAS. Incident: I woke up in the middle of the night to the smell of smoke. I ran downstairs and saw a smokey haze in the kitchen. There was smoke coming from the microwave. The exterior was hot to the touch. The glass turntable was so hot it was untouchable. I unplugged the microwave immediately - felt the cabinets which were hot but not smoking. I later called Samsung to see if there was a recall, their only comment was "it's not under warranty". Didn't ask for details or seem to care there was a potential fire hazard.

UnverifiedEvidence ★★★★☆
View report details

Months until failure

31 months

Repair cost

Not stated

Repaired

Not stated

Manufacturer warranty

Not stated

Extended warranty

Not stated

Support helpful

Not stated

Would recommend

Not stated

AI extraction confidence

86%

Verification status

Unverified

Evidence quality

★★★★☆ (4/5)

Discussion

Fire / ignition

Telephones or Telephone Accessories (550)

24 months

Government / agencyIndexed Oct 16, 2026Source-linkedVerify source — SaferProducts.gov incident

SaferProducts.gov consumer incident report 20250809-CFE25-2147328797. Severity: Incident, No Injury. Product: Samsung Galaxy S23 Ultra. Model name - SM-S918U (Product name - Galaxy S23 Ultra Model name - SM-S918U Serial number - R5CW505HNXX). Incident: Subject: Urgent Safety Hazard Swollen Samsung Battery Hello, I am reporting a serious safety issue with my Samsung phone. I purchased it about two years ago, and recently the battery started swelling. The swelling is getting worse every day, and I am concerned it may explode or catch fire. I rely on this phone daily and have no other device to use. The swelling has caused the phones body to separate, and it now feels unsafe to handle. This is a manufacturing defect and a fire hazard, not normal wear and tear. I request that Samsung immediately replace the battery (or the entire device) at no cost and investigate this issue to prevent harm to other customers. This complaint has also been submitted to the Consumer Product Safety Commission (CPSC) and the [REDACTED] for record and follow-up. Please treat this matter as urgent. Thank you, [REDACTED] Product name - Galaxy S23 Ultra Model name - SM-S918U Serial number - R5CW505HNXX [REDACTED] [REDACTED]

UnverifiedEvidence ★★★★☆
View report details

Months until failure

24 months

Repair cost

Not stated

Repaired

Not stated

Manufacturer warranty

Not stated

Extended warranty

Not stated

Support helpful

Not stated

Would recommend

Not stated

AI extraction confidence

88%

Verification status

Unverified

Evidence quality

★★★★☆ (4/5)

Discussion

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