One of my favorite aspects of folding phones is the return of the fingerprint sensors built directly into the power button. This is objectively the ideal design, for reasons I assume I don’t have to explain.
Lately, however, the novelty of folding phones is wearing off and I’m starting to think I’d just like something lighter and sleeker. Are there any recommendations for a phone with a power-button sensor that still has good specs and cameras?
Edit: for the purposes of this post, physical sensors on the back of the phone also count, since they can wake the phone and unlock it simultaneously.
And to clarify (I thought this was a thing everyone just inherently agreed on), the benefits of physical sensors are:
accuracy. A physical sensors will always be more accurate (and thus have fewer issues) because it doesn’t have to work THROUGH the screen. This has been improved a lot with newer technologies like ultrasonic readers, but it is literally impossible to be better than the same technology utilized without a screen in the way.
wake/unlock in one motion. Since it’s also a button, it can wake the phone and unlock it in one motion, rather than 2 separate ones. Again, newer tech has sort of worked around this with things like lift to wake or just having the sensor area ALWAYS scanning so you can unlock it from sleep regardless, but these are clunky software implementations that rely on your phone constantly actively trying to to figure out whether you’re doing the thing or not, so it again can’t be as efficient as just a normal button. Battery impact for these is also pretty minimal for the most part, but it’s still not zero.
tactility. You can feel the button, and manufacturers can put it where your hand naturally rests, meaning that you can unlock the phone BEFORE you have even taken it out of your pocket.
cost. Physical sensors are hella cheap y’all. The technology to read the ridges on your finger through a sheet of plastic and glass is (turns out) kind of expensive. We’re all being forced to pay for this dumb gimmick.
durability. Screens get scratched and dinged up, which compromises the sensors ability to read. Physical sensors on the other hand are basically the most durable part of the phone. Again, mostly a non issue on newer phones, but it’s yet another thing manufacturers have had to dump money into working around (and thus charging you more for).
not impacted by screen protectors, rain on the screen, etc.
IDK, for me the under screen works fine. When I want to use my phone it turns on automatically when I pick it up, and when I touch the sensor area, it’s instantly ready for use, with me holding it the way I want to use it, whether it’s 1 or 2 hand use, or left or right hand.
I don’t normally use the power button, except to turn off the screen when I’m finished using it.
The reader being under the screen makes the most sense in my opinion. It’s the part of the phone you touch the most. And speed is a non issue anymore. Ultrasonic sensors are about as fast if not faster than the old capacitive ones now. They’re also as accurate in my experience and after a while I’ve learned to put my finger exactly where it is so it’s a non issue. It also unlocks when my finger is wet unlike the older capacitive ones which is huge for me. So in conclusion I disagree. Fingerprint sensors should be in display and ultrasonic.
under screen fingerprint readers (USFR) have basically no accuracy problems? I find that mine rarely struggles to read my fingerprint, and the one on my Ipad (on the power button) sometimes doesn’t register the first time either.
the USFR DON’T need to scan all the time, they can just wake when YOU TOUCH THE SCREEN! It’s basically the same for ALL kinds of fingerprint readers, so it’s a non-issue.
well, I concede that point
cost comes down with scale. Also phones are ridiculously expensive nowadays, the cost of the sensor doesn’t have a huge impact on that.
fingerprint readers can scratch as easily as the screen. People are much more likely to make sure the screen does not get damaged than the finger print reader.
traditional finger print readers struggle when wet as well. Also your phone is basically unusable anyways, when it’s wet.
I mean it comes down to preference, but I like the scanner to be under the screen. All the things you listed really speak against finger print scanners in general, why not use Face ID?
Anecdotally, my old back-mounted LG fingerprint scanner has never been wrong (when dry of course), but my Pixel needs a re-scan 30% of the time.
My phone requires a tap to wake the screen before the fingerprint reader will accept any input at all, unless I decide to burn battery and turn on AOD.
E: My current phone uses an optical sensor and, from what I understand, ultrasonics are infinitely better
manufacturers can put it where your hand naturally rests, meaning that you can unlock the phone BEFORE you have even taken it out of your pocket.
Idk, my “unlock” finger naturally rests wherever the fingerprint scanner is on my phone. When I had a rear fingerprint scanner, I used to have my phone’s bottom right corner planted into my palm near the thumb and used the index finger to support its back near the scanner, so I was always ready to unlock it.
Now that I have an under-screen scanner, I use my pinky as a “shelf” for the phone’s bottom side, ring finger to hold it on the far side and index finger along the near side (which makes me suspect this grip would work for in-power-button scanners too), and that makes my thumb naturally rest exactly on the spot where the scanner is. With (one) tap to wake, I have no problem unlocking the phone while taking it out of my pocket - literally just a quick double tap. Although it’s true that you can’t unlock the phone directly in the pocket like this, because the proximity sensor should prevent the tap to wake from working.
I used to have a phone with a scanner in the power button too, but I can’t remember how I held it - I don’t think it was the same way as now, because I’m pretty sure I never used to rest my thumb on screen like this.
I’m personally not a huge fan of the ones in the power button, they never worked very reliably in my experience. Even worse than the under-screen ones usually.
I’d love to see phones with a fingerprint sensor on the back though. Granted I have pretty big hands and could easily reach it. Always worked reliably for me, and on my oneplus 5t i could even set actions to swipes on the fingerprint sensor.
The one on my Moto G Power 5G works just fine. It has a side mounted power button with the fingerprint reader built into it. It reads very quickly, and apparently very accurately, so much so that 99% of the time I’ve tried it you can just press the power button normally with the correct finger and this also unlocks the phone. The advantage I can see there is that it does not require a separate action to operate at all.
(I don’t keep my fingerprint reader activated, though, for security purposes. Down with fingerprint readers in general, at least if you live in the US where the police can compel you to supply your fingerprint to unlock your phone.)
The under-screen reader in my previous Moto Z4 never worked worth a damn.
Honestly I’m pretty impressed with the G Power 5G overall. It’s a “budget” phone so certain people will inevitably get unreasonably butthurt over the lack of “premium,” but is quite fast enough for everything I do, gets great battery life, has a headphone jack and memory card slot, a good screen that’s 120hz capable, and it’s only $200-250 depending on the color. I think its cameras are just fine. How so? Well, check out any of my post history over the last month or two – All of my photos lately have been taken with that phone.
It’s less that the sensor isn’t good enough, and more than the human operating it isn’t good enough.
I have an iPad 10th gen with the fingerprint power button and I never realized just how often I hit the power button with parts other than my finger tip.
agreed! being able to unlock the phone while im pulling it out of my pocket was great. But the one place that fails is a phone sitting on a surface. i say give me two sensors! One one on the back and one under screen
I prefer a full-size physical sensor on the back of the phone myself. It tends to be more accurate and faster than the under screen ones I’ve dealt with. No idea about the power button ones. Convenient placement probably. Not sure about performance though.
I loved the rear-mounted sensor on my old Pixel 2XL, as it could be configured to allow some swipe gestures too. I had mine set to open notifications on swipe down, which was really useful.
In my experience rear-mounted sensors are the most accurate, closely followed by under-screen sensors. Side-mounted sensors are utter garbage.
Accuracy isn’t even that much of an issue, it’s that the side-mounted ones are far too easy to accidentally trigger just by handling the phone. I can’t count the number of times my last two phones told me I had three incorrect fingerprint attempts after I had just pulled them out of my pocket.
Then I got a Pixel and I have no more such issues and virtually perfect accuracy. Same on a Samsung tablet. Same on an old phone I had where the power button was on the rear and had a full-size sensor.
Basically, I’m perfectly happy with any front- or rear-mounted full-size sensor. Those tiny side-mounted ones suck.
It’s only ideal if you hit the power button on your phone. I never hit the power button on my phone except to turn it off. Raise to wake or tapping the screen is the only way I wake my phone.
Yeah, almost every placement has it’s pros and cons, my only pet peeves is under screen ones are placed often too low, forcing you to change the way you’re holding the phone
My old phone was a redmi note 10 pro with power button sensor and I did find it more accurate than my current pixel 7a under screen sensor. But it hasn’t been a deal breaker for me
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IDK, for me the under screen works fine. When I want to use my phone it turns on automatically when I pick it up, and when I touch the sensor area, it’s instantly ready for use, with me holding it the way I want to use it, whether it’s 1 or 2 hand use, or left or right hand.
I don’t normally use the power button, except to turn off the screen when I’m finished using it.
The reader being under the screen makes the most sense in my opinion. It’s the part of the phone you touch the most. And speed is a non issue anymore. Ultrasonic sensors are about as fast if not faster than the old capacitive ones now. They’re also as accurate in my experience and after a while I’ve learned to put my finger exactly where it is so it’s a non issue. It also unlocks when my finger is wet unlike the older capacitive ones which is huge for me. So in conclusion I disagree. Fingerprint sensors should be in display and ultrasonic.
The side mounted finger print reader / power button on my old Sony Xperia XZ 1 Compact was great. Wish more phones had side mounted FP sensors.
My S10e has one, it’s fine.
Since nobody has given you a recommendation; The Sony Xperia 1 VI has that, although not available in the US
under screen fingerprint readers (USFR) have basically no accuracy problems? I find that mine rarely struggles to read my fingerprint, and the one on my Ipad (on the power button) sometimes doesn’t register the first time either.
the USFR DON’T need to scan all the time, they can just wake when YOU TOUCH THE SCREEN! It’s basically the same for ALL kinds of fingerprint readers, so it’s a non-issue.
well, I concede that point
cost comes down with scale. Also phones are ridiculously expensive nowadays, the cost of the sensor doesn’t have a huge impact on that.
fingerprint readers can scratch as easily as the screen. People are much more likely to make sure the screen does not get damaged than the finger print reader.
traditional finger print readers struggle when wet as well. Also your phone is basically unusable anyways, when it’s wet.
I mean it comes down to preference, but I like the scanner to be under the screen. All the things you listed really speak against finger print scanners in general, why not use Face ID?
For the first two, based on personal experience:
Anecdotally, my old back-mounted LG fingerprint scanner has never been wrong (when dry of course), but my Pixel needs a re-scan 30% of the time.
My phone requires a tap to wake the screen before the fingerprint reader will accept any input at all, unless I decide to burn battery and turn on AOD.
E: My current phone uses an optical sensor and, from what I understand, ultrasonics are infinitely better
Idk, my “unlock” finger naturally rests wherever the fingerprint scanner is on my phone. When I had a rear fingerprint scanner, I used to have my phone’s bottom right corner planted into my palm near the thumb and used the index finger to support its back near the scanner, so I was always ready to unlock it.
Now that I have an under-screen scanner, I use my pinky as a “shelf” for the phone’s bottom side, ring finger to hold it on the far side and index finger along the near side (which makes me suspect this grip would work for in-power-button scanners too), and that makes my thumb naturally rest exactly on the spot where the scanner is. With (one) tap to wake, I have no problem unlocking the phone while taking it out of my pocket - literally just a quick double tap. Although it’s true that you can’t unlock the phone directly in the pocket like this, because the proximity sensor should prevent the tap to wake from working.
I used to have a phone with a scanner in the power button too, but I can’t remember how I held it - I don’t think it was the same way as now, because I’m pretty sure I never used to rest my thumb on screen like this.
Woah. That 4th paragraph reads like it was written by the cocaine.
I’m personally not a huge fan of the ones in the power button, they never worked very reliably in my experience. Even worse than the under-screen ones usually.
I’d love to see phones with a fingerprint sensor on the back though. Granted I have pretty big hands and could easily reach it. Always worked reliably for me, and on my oneplus 5t i could even set actions to swipes on the fingerprint sensor.
The one on my Moto G Power 5G works just fine. It has a side mounted power button with the fingerprint reader built into it. It reads very quickly, and apparently very accurately, so much so that 99% of the time I’ve tried it you can just press the power button normally with the correct finger and this also unlocks the phone. The advantage I can see there is that it does not require a separate action to operate at all.
(I don’t keep my fingerprint reader activated, though, for security purposes. Down with fingerprint readers in general, at least if you live in the US where the police can compel you to supply your fingerprint to unlock your phone.)
The under-screen reader in my previous Moto Z4 never worked worth a damn.
Honestly I’m pretty impressed with the G Power 5G overall. It’s a “budget” phone so certain people will inevitably get unreasonably butthurt over the lack of “premium,” but is quite fast enough for everything I do, gets great battery life, has a headphone jack and memory card slot, a good screen that’s 120hz capable, and it’s only $200-250 depending on the color. I think its cameras are just fine. How so? Well, check out any of my post history over the last month or two – All of my photos lately have been taken with that phone.
It works perfectly on my phone (Poco X3 NFC). It is probably different from phone to phone.
It’s less that the sensor isn’t good enough, and more than the human operating it isn’t good enough.
I have an iPad 10th gen with the fingerprint power button and I never realized just how often I hit the power button with parts other than my finger tip.
Aw c’mon, you can’t go full dystopia without telescreens!
The fingerprint reader on the back of the phone was the best, in my opinion.
I miss the LG G6’s fingerprint reader, it was perfectly placed for me.
Especially if it supported gestures.
Being able to pull down the notification shade with a swipe on the reader was my favorite feature.
agreed! being able to unlock the phone while im pulling it out of my pocket was great. But the one place that fails is a phone sitting on a surface. i say give me two sensors! One one on the back and one under screen
1000% agree. Pixel 3a / 4a era was the greatest
…can you explain? I don’t understand the issue with the reader being underscreen, let alone why being on the power button is best.
I prefer a full-size physical sensor on the back of the phone myself. It tends to be more accurate and faster than the under screen ones I’ve dealt with. No idea about the power button ones. Convenient placement probably. Not sure about performance though.
I loved the rear-mounted sensor on my old Pixel 2XL, as it could be configured to allow some swipe gestures too. I had mine set to open notifications on swipe down, which was really useful.
In my experience rear-mounted sensors are the most accurate, closely followed by under-screen sensors. Side-mounted sensors are utter garbage.
Accuracy isn’t even that much of an issue, it’s that the side-mounted ones are far too easy to accidentally trigger just by handling the phone. I can’t count the number of times my last two phones told me I had three incorrect fingerprint attempts after I had just pulled them out of my pocket.
Then I got a Pixel and I have no more such issues and virtually perfect accuracy. Same on a Samsung tablet. Same on an old phone I had where the power button was on the rear and had a full-size sensor.
Basically, I’m perfectly happy with any front- or rear-mounted full-size sensor. Those tiny side-mounted ones suck.
It’s only ideal if you hit the power button on your phone. I never hit the power button on my phone except to turn it off. Raise to wake or tapping the screen is the only way I wake my phone.
I don’t even use it to turn it off.
Putting the phone face down or in my pocket does that for me.
I’ve used Gravity Screen for years to manage this.
Yeah, almost every placement has it’s pros and cons, my only pet peeves is under screen ones are placed often too low, forcing you to change the way you’re holding the phone
No scanner at all is the cheapest and it’s just as efficient. I don’t use mine so, if it has to have one, I really don’t care where it goes.
You know it’s an option to just… keep scrolling right? This isn’t high school, you aren’t obliged to leave a comment.
How is “stop worrying about them, they’re pointless” not an opinion on the matter of fingerprint sensors? And how do you know I’m not in high school?
My old phone was a redmi note 10 pro with power button sensor and I did find it more accurate than my current pixel 7a under screen sensor. But it hasn’t been a deal breaker for me
My Xiaomi 12 has an in-screen sensor. I’m not going back to having to put my finger on Power button. This is fast and intuitive.
Deffinetly poco f5 under 300€ on aliexpress (at least it was), great performance, but terrible camera.