JiaYu G4 Thin 1850mAh version testing shows 20 hour battery life

We were starting to think that JiaYu had forgotten all about the thin version of the JiaYu G4, but a recent forum post shows us the phone is very much alive and currently undergoing final tests.

Currently the only version of the JiaYu G4 available is the thick model with standard 1.2Ghz MT6589 CPU, 1GB RAM and large 3000mah battery, but Jiayu always promised that a more powerful Advanced model (seen here) would go on sale along with a thin version of both phones.

The only differences between the thick and thin models are the body thickness, size of the battery and about a days worth of usage! The 3000mAh battery version of the G4 easily lasts 2 days of use, but engineers at JiaYu say the thinner option gets just 20 hours of use.

Gizchina News of the week

1850mah jiayu g4

20 hours is more than enough to get the average user though the day, but those of you who spend your free time gaming might be wise to by the 3000mAh model. It should also be noted that the phone tested was a 1GB RAM, 1.2 Ghz version not the more power 2GB RAM MT6589T Turbo version.

More details and photos of the test can be found over on the JiaYu Forum. Thanks to 2PointOBoy for the tip.

Is 20 hours enough for you? Let us know in the comments below.

[ Source ]
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  1. hamsteyr
    June 5, 2013

    Shocking, given that the A7 is meant to be a more power saving chip as compared to the A9 and the A15 counterparts.

    My HTC Sensation had a standby time of 59 hours (I joke you not) and it only had a 1500 mAh battery.

    I feel disappointed really :\

    • Peter
      June 5, 2013

      Standby time does not equal usage.

      I can smash a battery on pretty much any phone flat in a few hours, even though it may do a week on standby.

      20 hours of usage is pretty decent if you say.. have 1 hour of web browsing, 1 hour of calls, 1 hour of video and 1 hour of audio, the rest of the time just background polling ect.

      • hamsteyr
        June 5, 2013

        I guess, but Even so, that 59 hours was me using the phone, surfing and whatsapp messaging.

        20 is decent in that sense, but I’m not sure if I should be expecting more out of an A7 Chip.

        • Peter
          June 5, 2013

          Ehh, I don’t really know what good battery life is like, i live in an area where reception is between low and non existent, so all phones and phablets get poor life. My Note II gets just over a day standby :S

          • hamsteyr
            June 5, 2013

            Hmm. I’m using a Note 2 as well, and I pull about 30 hours on a normal day (with plenty of Whatsapping, surfing and gaming), and about 40 hours on a very dull day, with minimal whatsapping and surfing, no gaming.

            Yeah, signal strength plays a real big part in the secret to having a good battery life, but I think the other lot really boils down to how well the engineers programmed their Kernel, and the “lightness” of the ROM.

            I extend my battery life installing a Custom ROM and Kernel onto my Note 2, and heavily tweak the Kernel’s voltages to the bare minimum needed to run stable, which in turn makes my phone run cool and draw less power.

            It would be interesting to see a benchmark comparison of power draw vs performance with the MTK6589 vs Qualcomm’s new Snapdragon 400 Quad Core A7’s. Assuming they then run the same fabrication process, it’s easy to see which has the more efficient Kernel/ Radio.

            And I’ve gone on and ranted :\ yeah.

            • Peter
              June 5, 2013

              I ended up breaking the USB socket on my note from plugging/unplugging too often 🙁 lucky replacement parts are cheap.

              Well, since the a7 core is 100% the same [if same process/lithography node(because they are arm’s IP)] it would just come down to things like kernel, memory interface and gpu. I *think* the qualcomm has an external radio, whereas the mediatek has one built into the SOC, so if you just measured SOC power consumption the mediatek would lose.

              Radio NVRAM configs and kernel play a big part, and since mediatek is very closed with their chip information, i don’t think there is much we could do.

            • ivo001
              June 5, 2013

              “Hmm. I’m using a Note 2 as well, and I pull about 30 hours on a normal day (with plenty of Whatsapping, surfing and gaming), and about 40 hours on a very dull day, with minimal whatsapping and surfing, no gaming.”

              I wonder how you fit 40 hours in 1 day.

    • June 5, 2013

      Just goes to show that CPU isn’t everything in a phone.

  2. June 5, 2013

    Ah good to see they are still working,
    For me 20 hours would be fine i charge my current phone every night and sometimes even during the daytime. but still i would prefer the 3000mAh version since that way i can put the screen at full brightness and keep my wifi on ^.^

  3. Baylex
    June 5, 2013

    That’s so poor… my old galaxy s would get me through 3 days, with like 3 or 4 calls a day and a lot of texting!

    • hamsteyr
      June 5, 2013

      I agree. My old Galaxy S did a Record breaking 96 Hours once 😐

      All the bells and whistles turned on as well, nothing cut short.

      I really though A7 would bring it back 🙁

    • Ace
      June 5, 2013

      I’m pretty sure they mean avarage use. My 2kmAh iocean can probably get 5 days if i just do calls and texting.
      I also do games youtube and web browsing though.

  4. Bert
    June 5, 2013

    Reads like a news item put out simply for the sake of it, and to reassure us all that Jiayu haven’t shut up shop.

  5. sere83
    June 5, 2013

    I find it extremely hard to believe that anyone has managed more than 24hrs usage with 3g turned on and used very heavily and brightness set to full on any modern smartphone. The A7 is pretty damn good at power consumption considering they have 1920×1080 phone with 2000mah with solid battery performance.

    95% percent of people charge their smartphone every day. I think 20 hrs is pretty good and given that the 3000mah model is a pretty chunky beast this will be a nice slim alternative.

    • June 5, 2013

      10mm is “pretty chunky beast” today. Oh god.

      • sere83
        June 5, 2013

        haha yeah, perhaps slightly overstated but still reasonably thick in comparison to almost all flagship and top end phones.

        • June 6, 2013

          SIV and XZ : 7.9mm
          One : 9.3m

          2mm thicker, heaven forbid.

    • June 5, 2013

      The G4 is only 720P, not 1080P

  6. June 5, 2013

    Haven’t heard anything about OTG since Andi said it was coming on the G4

  7. June 5, 2013

    Waiting so long for Jiayu! I thought that in July, I may get a hands-on G6, the monster or the S1, but still hanging on the G4! Jiayu, if you are seeing this post, please help your waiting fans to release their eagerness!

  8. June 5, 2013

    Is this idiot phone has touch button lights ??

    if not it is not good phone because it is huge shame brand new phone not have backlight touch buttons ???

    (once my old phone had not working back light keys because of it dropped on floor before i purchase and price reduced because of it….and Is this Jiayu company making phones by dropping them??)

    June 5, 2013


    • June 5, 2013

      Yes, you can. The thread on the official JiaYu forum has photos for comparison with both the 3000mAh and 1850mAh batteries shown used with the same phone. It also specifically says that the bigger battery just rises a few mm above the edge of the battery slot.

    • fraz
      June 7, 2013

      What I believe that you will need a different back cover which is little bit raised ..

  10. aaa
    June 5, 2013

    20 hours of use or 20 hours of standby?
    someone can translate how do they test it? i see some pics but it wont answer my questions

    • June 5, 2013

      The thread on the official JiaYu forum says that the 1850mAh battery gives 20hrs on regular use & 5hrs with the screen kept on continuously. Just translate the source webpage at the end of this article to English using Google Translate for more info.

      • June 5, 2013

        The thin battery gives 1.5-2 days standby versus the bigger one’s 4-5 days according to the source.

  11. June 5, 2013

    Hello Andi, You know when you sell battery and cover?

    Can you disassemble the phone and publish photos to see the components?
    I want to know if there is space for the LED’s softtouch.

  12. fraz
    June 7, 2013

    I have been using micromax a110 .. has mtk dual core 1ghz chip. 2000mah battery . Battery life of this phone is awe full. Since the phone is average quality comming out from china hence I assume all middle range phones must be behaving same. If I use bothsim 3g then without taking calls my battery ddrops 50 percent in 24 hours. That’s about 2 days of stand by time. Toggling brightness to minimum and on dual sim I can chat for 5 hours on gtalk . Continuous browsing is lesser.. depends on how many tabs are opened… but over all these phones are good if you have charger at hand… not good for people who return home once ina few day …

    Oh BTW micromx a110 is the same phone which is being sold in Germany as Cynus T2

  13. June 13, 2013

    Any word on when the thin version will be released?

  14. GG
    July 11, 2013

    anyyone facing this problem
    my 3000mah feels very warm on the palm
    cell standby eating up almost 8%battery on 40 mins after charge compare to the screen used 1% battery only
    kept the microsim slot empty as it wont detect the microsim punched device
    already dissapointed with the battery performance as it wont even last 1 day
    wonder changing the rom helps….