MOBI DualScan Prime Digital Thermometer Ear and Forehead Fast, Accurate, Baby and Adult Thermometer
$19.99
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The product is a dual-use thermometer designed for both ear and forehead readings, but it has received mixed feedback. While some guests appreciate its ease of use and quick readings, a significant number of guests have reported concerns about its accuracy and consistency, with varying temperature readings and issues with its additional features like food and bath water temperature checks. The thermometer's user-friendliness and quick results are overshadowed by the reliability issues that are critical for monitoring health.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
3.8 out of 5 stars with 1929 reviews
design: 2.39 out of 5
quality: 1.99 out of 5
safety: 2.15 out of 5
17% would recommend
392 recommendations
1 out of 5 stars
2 February, 2026Verified purchase
Not Accurate
Not accurate at all. Took the temp in the same spot 3 times have would get 98.7, 100.9, and 102.3 How am I suppose to know which is the right one?!
1 reply from MOBI Team team - 11 days ago
Hello Andrea, sorry to hear that the Prime Thermometer is not operating as designed. Ensure to follow all recommendations for the best results with your device. Also, keep in mind that the environment, positioning, and factors like hair and sweat can affect the device's accuracy. Contact our Support Team if issues persist.
1 out of 5 stars
Thumbs down graphic, would not recommend
24 January, 2026Verified purchase
Never Worked Accurately
Always read super low (like 95-96°). Didn’t matter if I took cap off for ear or did forehead scan. Completely useless.
1 reply from MOBI Team team - 18 days ago
Hello, thank you for reaching out. We're sorry to hear of your experience with our Prime Thermometer. Please contact our Support Team for further assistance at (323) 904-3000.
1 out of 5 stars
Thumbs down graphic, would not recommend
19 January, 2026Verified purchase
(no review title)
Not accurate.
1 reply from MOBI Team team - 25 days ago
Hello Aubrey, sorry the Prime Thermometer didn’t work as expected. Recalibration often resolves sensor issues. For best accuracy, follow all tips, as conditions and positioning can affect readings. Please contact Support if needed.
1 out of 5 stars
Thumbs down graphic, would not recommend
15 January, 2026
(no review title)
This thermometer is the most wacky thermometer I've ever used. I do three temperature scans every time I use this because they are always so sporadic. it's told me that my temperature was 105° at one point in time and then on a different part of my head it told me that the temperature was 95°. if you want a thermometer with a temperature you can trust, don't use this thermometer.
1 reply from MOBI Team team - 28 days ago
Hello, thank you for your feedback. We’re sorry for your experience. Results can vary with placement and distance; please contact our support team so we can assist or arrange a replacement.
2 out of 5 stars
Thumbs down graphic, would not recommend
12 January, 2026Verified purchase
(no review title)
Very unreliable readings! Bought 2days ago. Wish I still had the box so I can return. Also somehow switched to C and can't figure out how to change back to F
1 reply from MOBI Team team - 1 month ago
Hello Gregory, thanks for reaching out. Sorry to hear about the Prime Thermometer. Recalibration may help with accuracy. Please check the user manual for steps to switch from °C to °F. If issues continue, our Support Team is happy to help.
2 out of 5 stars
4 January, 2026Verified purchase
(no review title)
Doesn’t work
1 reply from MOBI Team team - 1 month ago
Hello, thank you for reaching out. We're sorry to hear of your experience with our Prime Thermometer. Please contact our Support Team for further assistance at (323) 904-3000.
2 out of 5 stars
Thumbs down graphic, would not recommend
28 December, 2025Verified purchase
Inconsistent Readings
As others have said - inconsistent readings. I follow the directions and make sure no hair is in the way, that the thermometer is placed correctly, etc. but I still got wild variations. Two nights ago I got a reading of 103, was very worried, then got readings of 101 seconds later. Tonight I got a reading of 102.1 then 101 something, then 109 something, then 99 something. At this point I don't trust this thermometer at all and we've only had it 7 months.
1 reply from MOBI Team team - 2 months ago
Hello, sorry to hear the Prime Thermometer didn't operate as expected. Please contact our Support Team for further assistance or a device exchange, if needed.
3 out of 5 stars
Thumbs down graphic, would not recommend
11 December, 2025Verified purchase
inconsistent readings
keeps giving different readings each time you take the temp. also doesn't match up to other thermometers when temps taken at the same time in the same location.
1 reply from MOBI Team team - 2 months ago
Hello, thanks for reaching out. We’re sorry the Prime Thermometer isn’t behaving as expected. For best accuracy, please follow the use guidelines—things like environment, positioning, hair, or sweat can affect readings. If the issue continues, our Support Team is ready to help.
1 out of 5 stars
Thumbs down graphic, would not recommend
9 December, 2025Verified purchase
(no review title)
Would not recommend this item. Very inaccurate and inconsistent readings. Waste of money.
1 reply from MOBI Team team - 2 months ago
Hi Brook, thanks for reaching out. We’re sorry the Prime Thermometer isn’t working as expected. For best accuracy, please follow the usage guidelines and note that the environment, positioning, hair, or sweat can affect readings. If the issue continues, our Support Team is here to help.
1 out of 5 stars
Thumbs down graphic, would not recommend
15 November, 2025
Not a good product
I have used many kinds of thermometers over the years, electronic and non-electronic. This is the worst one I've used. Every reading is dramatically different, up and down, taken within seconds or minutes. It doesn't matter.
1 reply from MOBI Team team - 3 months ago
Hi Evala, We’re really sorry to hear about your experience — your thermometer should feel reliable and consistent, and we understand how frustrating this must have been. This definitely isn’t the performance we expect from our DualScan Prime. In most cases, large swings in readings are caused by sensor alignment or calibration, and we’d be happy to walk you through a quick fix or arrange a replacement if needed. If you’d like us to take care of this for you, please reach out to service@getmobi.com and we’ll make it right. — Team MOBI
1 out of 5 stars
Thumbs down graphic, would not recommend
14 November, 2025
DO NOT TRUST! Junk Product.
Do not use on children - completely false/unreliable. No idea how it has any good reviews. I followed the instructions for setting up after purchase / prior to use *for the record. I will very clearly have fever & it will give me a 93F reading in one ear, a 96F reading in the other ear, & a 97F reading on forehead. This product should be removed from the market or pricing should be $3 for its junk level. See comparison of my Kroger thermometer taken at same time under tongue as the MOBI taken in ear……
1 reply from MOBI Team team - 3 months ago
Hi Linds, We’re truly sorry for the experience you had — that’s not what we want for any family. Inconsistent readings usually point to a calibration or positioning issue, and we’d like to take a closer look at your unit. Please reach out to us so we can verify the device and replace it if needed. We’re here to make this right.
1 out of 5 stars
Thumbs down graphic, would not recommend
13 November, 2025
Innacurate and dangerous
Inaccurate and very dangerous potential liability. Doesn’t read accurately. Ear says one thing, forehead says another, basically saying no fever but maybe a fever: reads different every time. My son had a high fever and this thermometer didn’t pick it up. This is potentially dangerous for little ones who cannot speak up for themselves. Get a different one
1 reply from MOBI Team team - 3 months ago
Hi there, Thank you for sharing this — we take concerns about accuracy very seriously. This isn’t the performance you should expect from a DualScan thermometer. Please contact us so we can check your device and provide a replacement if necessary. Your child’s safety and your peace of mind matter to us.
1 out of 5 stars
Thumbs down graphic, would not recommend
2 October, 2025Verified purchase
next
I thought because it cost more it would work but I was wrong. Very inaccurate.
1 reply from MOBI Team team - 4 months ago
Hello Anna, we’re sorry to hear about your experience. The MOBI Prime Thermometer is trusted by many families for quick, reliable readings, and we want it to work the same for you. Please reach out to our Support Team for further assistance.
1 out of 5 stars
Thumbs down graphic, would not recommend
22 September, 2025
Save your money
Wouldn’t recommend inaccurate every time it’s a new temperature
1 reply from MOBI Team team - 5 months ago
Hello Courtney, we’re sorry about your experience. Our thermometers are designed for accuracy, but readings can be affected by placement or environment. Please reach out to our support team—we’d be happy to walk you through proper use or assist with a replacement.
1 out of 5 stars
Thumbs down graphic, would not recommend
19 September, 2025
Not at all accurate
I bought this new and it kept reading 97.9 and lower when my daughter felt warm. I went out and bought a Braun one and she had 101 fever. I tried MOBI in the ear and forehead, on different people, and cleaned it how the instructions say and it still never once gave a reading even close to the Braun one. We did buy a 3rd Up&Up brand just to make sure and still the same, Mobi was at least 10 degrees off and in some cases read 90.2 in ear and 92.7 in forehead of a child with a 102.1 (Braun) and 101.8 (up&up) fever. If you want a thermometer that is even remotely accurate, this isn't it.
1 reply from MOBI Team team - 5 months ago
Hello KJ, sorry to hear that the Prime Thermometer wasn't operating as designed. The device may need to be recalibrated. Also, environment, positioning, and things like hair and sweat can affect the accuracy of your device. If issues persist, please contact our Support Team for further assistance or a device exchange, if necessary.
1 out of 5 stars
Thumbs down graphic, would not recommend
11 September, 2025Verified purchase
do not buy!!
2+ degree variation, not accurate.
1 reply from MOBI Team team - 5 months ago
Hello Victoria, We’re sorry to hear about the variation you experienced. The Prime Thermometer is designed for accurate results, but placement, hair or sweat, and environment can affect readings. Please reach out to our Support Team so we can help resolve this for you.
1 out of 5 stars
Thumbs down graphic, would not recommend
8 September, 2025Verified purchase
Not accurate
I got this thermometer yesterday in pickup because my head was hurting quite a bit. It kept showing me 98.3 - 98.7 so I thought I was ok. I didn’t feel better this morning so I went to urgent care. I have a 101 fever. This thing is not accurate.
1 reply from MOBI Team team - 5 months ago
Hello Lauren, we apologize for your experience with the MOBI Prime Thermometer. We recommend following all recommendations for best use with your device as position, environment, and even things like sweat an hair can cause the device to read inaccurately. If issues persist, please contact our Support Team for further assistance.
1 out of 5 stars
Thumbs down graphic, would not recommend
11 August, 2025
Highly inaccurate
Completely inaccurate to the point it can’t be used at all. Will read 96 on forehead, then 103 in ear. Then 99 in ear, then 102 in ear 98. All taken in 5 minute intervals.
1 reply from MOBI Team team - 6 months ago
Hello, we’re sorry for the inconsistent readings you’ve experienced. This can sometimes happen due to placement, environment, or mode changes. Please contact our Support Team at (323) 904-3000 for further assistance.
1 out of 5 stars
Thumbs down graphic, would not recommend
8 August, 2025Verified purchase
Don't waste your money
I tried forehead and ear on three different people and couldn’t get a temp reading over 95. This thing is wildly inaccurate. My husbands temp gun in the shop that’s been run over before works better.
1 reply from MOBI Team team - 6 months ago
Hello, thank you for reaching out. We are sorry to hear of the experience you had with the MOBI Prime Thermometer. Ensure you are following all recommendations for best use with your device. If issues persist, reach out to our Support Team for further assistance.
1 out of 5 stars
Thumbs down graphic, would not recommend
1 August, 2025
Am I 91 degrees or 102? Somewhere in between?
I got this item because I thought it would be more accurate than an under the tongue thermometer, and the reviews were mostly saying it was accurate. Couldn’t be further from the truth. Every time I take my temperature, even if I take it in exactly the same spot it gives a different reading. Sometimes it says I’m 91 degrees, other times 102. Not only is it not accurate by any means, but the range of inaccuracy is ridiculous. Don’t waste your money.
1 reply from MOBI Team team - 6 months ago
Hi Kalista, thanks for reaching out. We’re sorry to hear about your experience. Please follow all usage tips for best accuracy—recalibrating the thermometer usually helps. If the issue continues, our Support Team is here to help.