Anonymous, 15 Sep 2014Have used both mi3 and asus zenfone5.Believe me zenfone 5 is better than mi.its UI is great i ... moreMany people only look at megapixels but there's a lot more than that.
First of all the lens. Lens have resolution constraints. Obviously crappy plastic lens will not be as sharp as properly coated glass lens. Therefore the amount of details will depend on the sharpness of the lens. Very few phones have adequate lens for the resolutions of the sensors.
Then there's the size of actual sensors, vs. their pixel counts, and as such the size of each pixel. The best mobile sensors have 1.5 um, most have 1 um or smaller pixels.
This is not an issue in good light, but it is a serious problem in low light. Imagine a room with the whole wall being the window. You can tell very precisely the colour of the sky outside. But if you have only a small window, it's more or less guessing. And that guessing makes noise, which bayer patterns of the sensors, which captures only one colour per pixel and guesses the other 2 makes even worse. So the larger the pixel, the better the performance at low light.
Some phones (like Zen) use pixel combining where it uses 4 pixels as 1 pixel to get more accurate information but of course lower resolution. That way Zen has about 5 um pixel in low light mode.
Some others went the other way, like Oppo with UltraPixel camera, which has 13 megapixel resolution, but then does half a pixel shift around, and combines information to get 50 megapixel image, despite using only 13 megapixel sensor and pixel size of 1.2 um.
Why are sensors so small is the problem of lens sizes. The larger the sensor, the larger lens you need.
Then there's aperture, and coating. Some phones (like Zen) feature f2.0 or f2.2 cameras, which can capture a lot of light, and coating that minimises or eliminates the reflections inside the multi-glass assemblies.
But you'll see cheap Chinese phones that have cameras that gather bugger all light and no matter what fancy number they have written at the front, could barely make f8. That kind of lens require 4x longer exposure, or 4x higher ISO. The higher ISO, the higher the noise.
And finally, noise aside, there are 2 things that need to be done after photos are taken - process it so that noise is eliminated or lowered - and for that it's using a set of mathematical formulas, which can produce either very good, or mediocre, or disastrous image, even from same RAW (off sensor) data. And then this needs to be saved as a JPG, where again you can have good or bad JPG engines, which will either make a detailed image, or one full of artefacts with horrible colours.
I did not mention anti moire film in front of the sensors, as I am not 100% sure that the mobile phones actually have them… I guess they do? That is a slight blur to eliminate the patterns causing a moire effect in the images. Some call it a prefilter.
So here's the problem - people only care about numbers game. But there's a lot more than a simple megapixel count. And most cheap phones (and even many expensive ones) don't come anywhere near the resolution that is printed in the specs sheet...
AnonD-289600, 15 Sep 2014seriously, i don't have much idea about does batteries, since my friend discussed about lithiu... moreInflation is caused by lousy current control in the products. Basically chips that badly control voltage and only rely on the temperature to adjust the charging current. They tend to kill battery when the temperature drops, as they start charging again even though it's already full.
But quality control chips also check the feedback from the battery and mostly avoid overcharging batteries, as once battery is full it will not start charging again until the cable is unplugged and replugged.
Zen should not charge battery after it is full, but it WILL use direct current from charger to power the phone rather than the battery, when it's fully charged and cable is still connected.
The type of battery in ZenFone and in iPhone is identical. Same goes for pretty much every phone out there now.
Note that the battery CAN be changed, and can even be purchased, just because of limited supply it is hard to get and therefore quite overpriced. Also it requires phone to be completely dismantled before battery can be changed.
It is about 20-30 minutes undertaking.
MIS, 15 Sep 2014Dear Sir Thank you very much,
Since I am in the state of indecision I posted such a query and... moreI have not seen any A500KL with dual SIM. The slot is there but covered. So I assume it may be available at some later time at some territories, but with shoddy battery life on LTE adding a second SIM would make it unacceptable. Not sure there ever would be dual SIM version, but the board is ready for it.
The screen's sensitivity is actually good. And there's a glove mode, which can spice it up further more.
I have never heard of a burning smell coming out of it. The phone will shut down when CPU exceeds 70C, and plastic would melt far beyond that. Note also that there is a heatsink between the CPU and plastic, so the temperature on plastic in worst case would not exceed 45-50C before phone shuts down. I don't think that's true. Maybe just someone bashing the product, but to melt plastic is not possible.
Yes, the Zens all have FM radio, in 0.1 MHz increments from 88-108 MHz.
Comparing the 1.2 GHz Quad Core Snapdragon and 2 core Atom in otherwise identical phone gave more or less identical experience. What I cannot tell is how this fares inside the 3D games, etc. as I am not a gamer. I do have many apps open and neither experienced any lags or stuttering with same apps open.
I do not use original charger but instead a 2.5A Samsung Galaxy Note 2 charger for the Asus and it takes about 3 hours to charge from below 10% to full.
It IS true that the percentage drops from 100 to 99 or 98 as soon as you start using it - that is because Asus considers 100% only when the battery is really 100% full. Some other phones set 100% a little lower, so you can use them a while before the figure drops.
The internal loudspeaker (for when you have phone up to your ear) is decent. The external speaker is not very loud. It is not a good speakerphone.
Hope that helps.
Andy, 14 Sep 2014Since battery is not removable, what to do if its not working properly ?ya bro you are correct
KALAY, 15 Sep 2014if the battery is non-removable, what if the fone is not working, what to do?
Yes ZF5 battery is non removable but don't worry its safe and it can be check and change through service centre.
Many high-end Smartphones comes with fixed battery like iPhones, Samsung Note3, HTC1 etc. And tablet also comes with fixed battery.
I think in future all smartphones will comes with fixed battery bcoz of it will help to design the phone compact and thinner..
AnonD-279813, 15 Sep 2014Actually, I think I owe you a complete answer. There are only Lithium Ion cells available c... moreseriously, i don't have much idea about does batteries, since my friend discussed about lithium batteries that don't inflate like iphones. Batteries that inflate worsen its performance/capacity and you don't have a choice but to replace. I'm afraid that might happen to zenfone 5, since it is not removable, it is not built in. Another thing, i want to know if zenfone 5 gets full, will it automatically stops charging, i mean, stops power to flow in batteries,i think that causes inflation.
Have used both mi3 and asus zenfone5.Believe me zenfone 5 is better than mi.its UI is great i would rate it best among samsung,miui,zen ui.Cam quality athhough 8mp but beats 13 mp of mi.
AnonD-279813, 15 Sep 2014Your answers:
1. Where I am using the phone, reception is excellent, so I can only answer o... moreDear Sir Thank you very much,
Since I am in the state of indecision I posted such a query and you being the active poster in the site.
In GSM Arena the Zenfone 5 A500KL (LTE version) is specified as optional dual sim, but in reply to my question you wrote it that it has single slot?
I heard that Zenfone 5 is having HD screen and how good is the touch sensitivity because many have posted in flipkart site in India touch sensitivity is poor as it’s low budget gadget.
Many have posted that heating issue with a burning smell inside the back panel is it true?
Whether Zenfones doesn’t have Radio (FM)?
Do you think Intel dual core 1.6 GHz processor is equally powerful and as good as a quad-core one in multi-tasking?
How long it takes to charge from 15-100%.
How good is the loudness and clarity of the loudspeaker?
Please spare some more times to clear my doubt sir.
AnonD-307570, 15 Sep 2014My phone is not reading my sd card. anybody else is the same problem? any suggestion please.Try to reformat the SD card in the PC to FAT32, then insert it back, and make sure it's locked.
It is a good idea to insert it when the phone is turned off. Although I've done it with it turned on and it recognised it immediately.
That said - if apps are on the SD card, it's not a good idea to remove it while it's turned on… or ever :)
KALAY, 15 Sep 2014if the battery is non-removable, what if the fone is not working, what to do? Hold power button for 10 seconds, which will turn the phone off. That is a hardware control so it should not depend on state of OS or application.
AnonD-289600, 15 Sep 2014i need your opinions guys, which do you think is better, li-ion or li-po batteries? Which one ... moreActually, I think I owe you a complete answer.
There are only Lithium Ion cells available commercially. The true Lithium Polymer cells only exist in labs, where technology is maturing.
The Li-Po is in general used for Lithium Ion cells without a hard casing, instead being "housed" in a flat polymer film. This makes the cells slightly flexible, a lot thinner and lighter than those that are housed in proper shells.
LiPo batteries can expand and thus lose capacity and/or ability to be charged or discharged, and that usually happens due to overheating of the battery, bad charging or discharging control or short circuit. Since there's no hard case around the cells, batteries inflate like a balloon.
All Li-Po batteries will inflate over time, and as they lose capacity it's time to replace them. Those in hard shell will also inflate, but since shell is keeping them in shape, you may not notice this on the outside, until shell cracks from pressure.
So, if it is possible, can we put this Li-Ion vs. Li-Po discussion to rest, please? Both are identical technology, same chemicals, all pose identical risks and have identical advantages.
The true Li-Po (currently non-existent commercially) will bring advantage of chemicals being solidified, thus adding stability to compounds, and (hopefully) preventing internal damage and resulting overheat or fire caused by uncontrolled reaction inside the battery due to their direct exposure to each other.
if the battery is non-removable, what if the fone is not working, what to do?
ADJSL, 15 Sep 2014mobile kept idle through Flip cover close by selecting Flip cover mode enable or kept idle thr... moreFlip Cover mode burns more power as it's constantly using the proximity sensor to see if cover is open or closed, even when the screen is off, so it can turn on when you open the cover.
MIS, 15 Sep 2014Dear Mr. Tomazz
1. Zen 5 is how good in signal reception i mean in poor signal areas and har... moreYour answers:
1. Where I am using the phone, reception is excellent, so I can only answer on few occasions where I was in areas of lousy signal. It has 1 line higher signal usually than Samsung Note 3, and the same as iPhone 5S.
2. Yes, Intel CPU is more power hungry than Snapdragon, but not all of it is due to architecture. Some of it is also due to Jelly Bean OS not having any optimisations for power throttling of the Atom CPUs. This will change with KitKat. That said, I do not think Atom will be as power efficient as ARM architecture even after optimisations. On the other hand, while Atom might not excel on the benchmark tests, it is better performer than ARM at same speed/CPU core.
3. I have not had any issues with clarity except on the default firmware which came preloaded on my phone and was for the lack of stronger word "awful".
4. Camera is in the upper half of 8 megapixel offerings, and while it obviously can't compare with the likes of Samsung S5 or Oppo Find 7 in terms of details at good light, it does shred more or less all of them in very low light. I was a big critic of the Asus low light mode (as I compared it with DSRL camera), but after comparing it with the rest of the phones around… it's actually bloody good, even if limited to 1.5 (16:9) or 2 (4:3) megapixels.
I cannot comment on Moto G2, as I do not know it. However about A500KL - I have it on the desk in front of me and what I can say is this:
- it has 1 SIM slot rather than 2 slots of A501CG
- it has a quad core 1.2 GHz Snapdragon vs. dual core Atom 1.6 GHz HT of 501CG
- both feel snappy in the ZenUI, and I could not say that I felt any difference between them although I expected 500KL to have advantage due to KitKat and quad core CPU
- on 3G the 500KL battery lasts longer than on 501CG, on LTE the battery life is nothing to write home about… unless you want to send a complaint (used 2100 MHz TrueMove H 4G)
- despite expecting better picture quality since 500KL has a Sony sensor, the advantage of it is 0. Images look virtually identical in terms of noise and details.
- screen is the same… except it has a shortcut to camera at the top of the screen. Still trying to find out how to turn it off as it's ugly
- signal quality is the same, but you can't turn off 3G to use only 2G. Option is only to turn off LTE.
- audio volume and sound quality on both is the same. I could not tell the difference with my old ears.
- on the outside they look the same, they work more or less the same, the same accessories are in the box and same back covers/cases fit both models. The only difference is that the LTE one has LTE written on the box, and no Intel logo at the back of the plate. Otherwise you'd be hard pressed to tell which is which.
The LTE version costs 40% more than the 3G dual SIM version. Both are 2GB RAM, 16 GB eMMC.
mobile kept idle through Flip cover close by selecting Flip cover mode enable or kept idle through on / off switch. is there any difference at power saving point of view ?
can any one help please.
My phone is not reading my sd card. anybody else is the same problem? any suggestion please.
i need your opinions guys, which do you think is better, li-ion or li-po batteries? Which one is more safe? Somebody said, one of those batteries tend to expand and shorten battery perfomance. And i saw, that li-po discharges faster, so i'm thinking, that's why zenfones drain faster. What do you think?