yashsingh1/xdaforums huggingface dataset:
[JASJAR, XDA Exec, MDA Pro Software Upgrading] Confucious:
Hey, he might not have been speaking to you . Each to his own ;)

!.09 worked fine on my Exec on T-mob UK but was awful with jwrights WM6. 1.06 was better but 1.15 is the best so far - I still get the 'no modem at this number' wheb it tries to reconnect GPRS/3G but it's the best available for me - yet to find a perfect 1.
[JASJAR, XDA Exec, MDA Pro Software Upgrading] hebigakure:
according to my experience,radio1.13 is way too high consumption than 1.15?is that true?which one is the best for indonesia?
[JASJAR, XDA Exec, MDA Pro Software Upgrading] darkheroz:
ohhhh excuse me... I mean guys of course ;)

ok I will cont to use 1.15 damn it..
[JASJAR, XDA Exec, MDA Pro Software Upgrading] alexkass84:
It working fine in Russia :)

Have no problems with GPRS or GSM. And other features I dont using.
[JASJAR, XDA Exec, MDA Pro Software Upgrading] save2:
Radio 1.15.0 - GSM ok but fails to do Wifi+WPA_PSK

From all the Radio versions I tested this is the first image that fails to connect to Wifi networks secured with WPA.

I swithced my WRT54G to WEP security and everything connects.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] crimson12:
Update 2: I've had requests for links for the parts I used. I purchased the battery, a back cover, and all the additional accessories they suggested for removal.

Battery:

http://www.witrigs.com/oem-battery-for-sony-xperia-z1-compact

Back cover (this comes in different colors, but the link is for the black one):

http://www.witrigs.com/custom-back-cover-for-sony-xperia-z1-compact-black

---

Updating the OP. Thus far the only reliable way that myself and others have fixed their batteries has been by replacing them or having the phone repaired by Sony. Fixing it yourself involves purchasing a replacement from witrigs (or another parts supplier).

Flashing stock roms, custom roms (aosp or cm based), or factory firmware may temporarily give the illusion of being fixed. Battery repair apps don't do anything either (you can test this by 'fixing it', clearing app data and then 'fixing it' again).

I'm back to KitKat levels of battery life, using stock 5.0.2. Here's a recent screenshot for you.

-------

Original post:

So for the past few weeks my phone has really been acting up. I'll try and make this an organized question/post.

Here's the symptoms:

-Phone drops from 30ish % down to 1%, then powers off and wont turn back on due to low battery.

-Phone occasionally reports fully charged at different levels (such as 80% or 50%), upon reboot, it is listed as 100%.

-Some days I can watch it drop 1% every few seconds once it reaches 35%, literally like it's counting down.

-Other days it just works fine, I can use it to 5% and then charge with no problems.

Phone information:

-Z1 Compact

-Problem persists between ROM flashes and android versions. Have experienced issues on stock 4.4.4, stock 5.0.1, AOSP 4.4.4 and AOSP 5.1.

Really, any sort of help or places to start would be greatly appreciated. I don't even know what to try anymore and I'd really like to avoid trying to replace it (warranty expired already).

Attached a screenshot illustrating it happening. I unplugged my phone last night after charging it to full. Made it to work, put it in airplane mode, turned wifi on. Updated some apps and restarted it. Rebooted to about 10%. Charging again now.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] albuah:
HI There,

i got the same problem with my z1 compact. its all start when upgrade to lolipop...

some say our battery are dying...or got problem. are they ?

downgrade to kitkat, wipe everthing, battery calibration also still the same problem appear...
[Xperia Z1 Compact Q&A, Help & Troubleshooting] crimson12:
I've tried the same thing. Wiped data system etc and nothing helped.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Juss_K:
Same problem here. 4.4.4 stock rooted. It started about two weeks ago. I had done nothing except some play store upgrades. Haven't found a solution and I don't even know how to diagnose the problem. Various battery calibrations and/or deleting that battery data file haven't helped. Did a factory reset from recovery (almost accidental swipe while a bit drunk, gah...) - nothing. Battery level drop and shutdown occurs in random situations. Sometimes while taking a picture, sometimes with data on, sometimes off, gps on/off or whatever. Sometimes from 70% to 0, sometimes from 50%. Sometimes I can restart without charging after waiting a while and then it stays of for some time.

Yesterday I just did a reboot myself and when it came back on, the battery had dropped from 70 to 20% and then it stayed like that for some hours. Then I let it run to 0, charged without turning on to 100%. Then, when I turned the phone on, the battery level dropped to about 80% really fast and after that I got 20+ hours until it died again at 55% battery. I do see some small temperature spikes on Gsam battery monitor graph during those sudden drops, but never above 35 degrees Celsius and I don't think overheating is the issue here.

Again, I hadn't flashed any roms, updated android or messing around with the system or system settings before it started. Just normal everyday use, some websurfing, listening to music, taking occasional photos, reading blog feeds, taking notes.

Now I don't know what to do and I would greatly appreciate any help.

Haven't tried software repair yet, but what software could be still left broken?

Should I try unrooting via flashtool (does it lose all traces of root?) and taking it to warranty repair?

Right now the phone is practically unusable.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] AMDFenics:
Hey, did u checked the Service menu Batterie test?

[IMG="Service menu"]http://cdn.androidbeat.com/wp-content/uploads/2014/06/Z2_diagnostics_service-menu.jpeg[/IMG]

*#*#7378423#*#*

*#*#SERVICE#*#*

What does the test say?
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Juss_K:
I did check that yesterday and it was good.

And at the moment batt health status is "good, no need to replace it".

(Actual batt uAh: 2407000. Battery gauge at 74%.)

Yesterday after recharging and watching the battery plummet to 83%... It stayed there for some time despite data and GPS being on, using camera and an app. Should have dropped by a couple of % at least during that time.

13+ hours uptime now, very little use at night and at work.

That's what I'm afraid of. If the service test is good and at a glance everything seems to be fine then I won't get any help from warranty.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] albuah:
when test mine also in good condition. but the problem still happen. it kind makes me to conclude possible a battery hardware problem. need to change it, but it aint that cheap...
[Xperia Z1 Compact Q&A, Help & Troubleshooting] crimson12:
I've also checked my battery in the service menu. It reports good/healthy with the actual uAh being 2407000. I plan on wiping everything on the phone later today (system, all data, caches) and seeing if that helps at all, but I'm not very hopeful. Like you guys this pretty much just started happening for no discernible reason. Phone doesn't appear to be overheating either. Could the SD card being messing with it somehow? It seems implausible, but at this point I'm willing to try anything.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] crimson12:
SOLVED (for me at least)

So I bit the bullet and wiped everything except for my SD card about 2 hours after my last post. Installed the most recent KK version of DstrikerZ1s ROM with the Doomlord v22 kernel. Ran it hard all day till now. Still at 50% and I've rebooted to check and make sure it's accurate multiple times. I'll report back if it happens again, but the performance thus far seems much more consistent than what I had before.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] albuah:
So need to format sdcard?
[Xperia Z1 Compact Q&A, Help & Troubleshooting] crimson12:
Yeah, I backed up both my internal storage and SD card and then formatted both.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] eumanoid:
wow, i have the same problem and i don't want to go back to KK. doees anyone have any solution that keeps lolli on?
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Liquidator:
I've been having the same problem since February. First it turned off at around 14% (when the warning pops up), but it's already been turning off at 20+ and finally 30-something percent, which wasn't bearable. No amount of wiping or up/downgrading would help so I bit the bullet and got a battery exchange (not directly from Sony who wanted to charge ~160€). Problem is fixed for the time being.

As much as I love this phone, it'll be the last one I get without a user-replacable battery.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] crimson12:
Unfortunately my "fix" didn't work forever. I'm back to the same problem. Might as well suffer through it on lollipop. Where did you get the battery replaced?
[Xperia Z1 Compact Q&A, Help & Troubleshooting] albuah:
I'm beginning to wonder our battery going to die... Maybe need to change, from my place, Sony center way to expensive need 3rd party battery maybe.. Or other than service center...
[Xperia Z1 Compact Q&A, Help & Troubleshooting] eumanoid:
i bought my replacement battery from witrigs and installed it myself. battery life has been good since then.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] crimson12:
So it was relatively easy to do yourself? I'm relatively nervous to try it. Shipping is killer to the states too :/
[Xperia Z1 Compact Q&A, Help & Troubleshooting] eumanoid:
Yeah. It's pretty straight forward. I used my wife's hair dryer as a heat gun and followed witrigs guide. I was surprised to see a 30$ tax on my items though. But thats due to customs so i had ni choice.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] albuah:
need to unscrew 1 skrew only right?
[Xperia Z1 Compact Q&A, Help & Troubleshooting] micropizza:
exactly the same problem only since Lollipop update.

it'll just shut down about 30% battery now, no going into battery saving mode or anything, i'll just be messaging and get "shutting down". Also I've had 53% battery, rebooted and then have 80%ish, its completely messed it all up.

I've factory reset and cycled the battery (run down, charge full etc) more than once. I'm suprised peoples batteries actually need replacing, how can a software update damage the battery?

I remember with a previous rooted samsung phone you could delete a battery data file with root explorer or something, is there a similar non-root way to fix this problem?
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Ger$$on:
Received today from China, 1 month to my Country, 12 USD

Thanks for nothing, Sony
[Xperia Z1 Compact Q&A, Help & Troubleshooting] kaasaanfiets:
Hi i live in the Netherlands, and i also have the issue that my phone shuts down when it still has 42-49 %

So i need a new original battery but where do i get a good one? not a crappy fake chineese one that fails again after a year.

when i buy a "original" battery for the Z1 Compact, is it possible im getting the same original than the battery i already have with the same hardware bug? or are they all removed from stock? (yeah right im not sure i believe that)
[Xperia Z1 Compact Q&A, Help & Troubleshooting] nutdevza:
In my case, battery percent drops from ~40% to 25-28% in just few minutes even on airplane mode with low battery stamina enabled. Is this a sign to replace a new battery? I'm using Taiwan one but I'm living in Thailand.Sony Thai and import dealers won't give any service for customer using imported phone. Is anyone can suggest any solution for me?
[Xperia Z1 Compact Q&A, Help & Troubleshooting] profyler:
no its not. a new battery wont have this bug, relax.

buy it from sony in a tech store or seomething like that, or you can buy it in aliexpress or something. mine came from china. i dont know if its original, but its good.

buy one from aliexpress and you will be fine. mine, is like the one from 2 post above.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Oreltub:
I replaced the battery and then updated from 5.0.2 to 5.1.1... The battery drops stopped, but still im losing 15-20% p/hour.. I hope the week with 5.0.2 didn't ruined it..

AND now NFC doesn't work (i re-attached the NFC sticker, but nothing..)

Any ideas?

Xperia Z1 Compact .386 rooted
[Xperia Z1 Compact Q&A, Help & Troubleshooting] VJANE:
sony xperia z1 compact battery drain

I'll be joining this club to

Gone are the days where I could get home from work 12 later after unplugging from charging and be at 75% or a bit less. Now days when I get to work 20 min's or less it's at 75% or lower.

Initially I did find it did it occasionally, but that was with the battery running warm which is my key sign it's draining fast.

I worked it out to certain programs when they where open in the phone but not being used. Evernote did it every time, but not interestingly since I have started disabling WiFi when it's not being used. Otherwise it seems to be draining it because of constantly looking for a signal.

And yes since the latest phone system update a few weeks ago, that's when it seriously started happening.

Even disabling the WiFi I'm sure it's draining faster when I have it open and are using it.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Kik3san:
Hi again, got phone back from Service Center and they said battery was replaced again... I've been using my phone this weekend and drops seems to be finally gone!! I'm happy again 'cause battery life is like when I had KitKat
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Ger$$on:
Battery replaced, medium-heavy use, 5.1.1 stock Rom Rooted and unlocked Bootloader, Is this battery life normal?
[Xperia Z1 Compact Q&A, Help & Troubleshooting] crimson12:
Looks good to me man
[Xperia Z1 Compact Q&A, Help & Troubleshooting] coolkoushik07:
Buy it from ebay. I have already bought and using right now.. Ebay sellers will claim that its orifinal but its not original.. But battery backup is same as original.. Don't worry about quality, just go for it..
[Xperia Z1 Compact Q&A, Help & Troubleshooting] profyler:
Exactly. bought it from aliexpress. sellers say its original but i doubt. honestly, i this i like this even better. what if a original battery give me this drop bug again? i'll stick with the not original.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] alex_hk90:
I have had this problem for the last month or so as well. :(

While it did only start happening with Lollipop, I think this was just a coincidence as it was working fine with Lollipop for at least a couple of months.

I've ordered a replacement battery and back cover from eBay for around £10 in total and will try to fix it myself.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] crimson12:
Let us know if you need any help and good luck. It's not too difficult so don't stress too much. Be excited for your better battery!
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Oreltub:
After some time and tests I can proudly say- the battery stats are good! My first test wasn't accurate because half of the day Im playing DH5..

But still- have no clue about the NFC antenna.. Can you guys tell me how did you move it to the new battery (is it only the electric sticker or I need the metal surface too?)

Xperia Z1 Compact .386 rooted
[Xperia Z1 Compact Q&A, Help & Troubleshooting] profyler:
i took the nfc with extreme care. i used a blade to take it away because its sticked with glue on the original battery. even with care i cut a little of the eletric filament, but did not damage it because i tested with another device and there was conection.

Its only the nfc tag that u have to take it. but remember to put it on the new battery with the NFC conection, conecting in the 2 golden little plugs.

I dont know why i did this. i think i never used nfc in my life and probably wont either.. :p
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Oreltub:
I know about the connection, and i use NFC all the time..

Let me rephrase - what is the color of the BOTTOM of the sticker? As same as the top or its a grey metallic bottom?

After i took the sticker out, i saw on the white cover of the battery a square metal..

That's the old battery after i took the nfc

Xperia Z1 Compact .386 rooted
[Xperia Z1 Compact Q&A, Help & Troubleshooting] profyler:
i took the black part too, but i dont know if it was actually necessary
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Oreltub:
Ill try it too..

Xperia Z1 Compact .386 rooted
[Xperia Z1 Compact Q&A, Help & Troubleshooting] snuf1991:
Only problem with root?

Do all that have the problem here have rooted devices? Have anyone talked to Sony about it?
[Xperia Z1 Compact Q&A, Help & Troubleshooting] profyler:
No. Yes.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] snuf1991:
What was the reply from Sony? :)
[Xperia Z1 Compact Q&A, Help & Troubleshooting] profyler:
they dont acknowledge this issue.

https://talk.sonymobile.com/t5/Xperia-Z1-Compact/Sony-Z1-Compact-battery-drop/td-p/990701
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Oreltub:
Attached the grey part to the new battery.

Work like charm:)

Xperia Z1 Compact .386 rooted
[Xperia Z1 Compact Q&A, Help & Troubleshooting] peua79:
battery changed under warranty.

the phone now seems ok.

but I lost the root
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Oreltub:
Anyone who bought new battery from aliexpress experiencing charging/heating problems?

Xperia Z1 Compact .386 rooted
[Xperia Z1 Compact Q&A, Help & Troubleshooting] alex_hk90:
Thanks. :) I've got a replacement battery and back cover now, and have watched a couple of videos showing how to do it. But I don't think I have the necessary tools (i.e. suction cup, guitar pick, small Phillips head screwdriver) so I'm going to order these first.

Also, is it necessary to heat the adhesive using a hair dryer or hot air gun? I don't have either of those - would holding it near a radiator work or does it really need to be quite hot?
[Xperia Z1 Compact Q&A, Help & Troubleshooting] djfuego:
OK SO Update on battery .. I reverted back to KK as I didn't have issues with it. And my battery has been draining normally and charging normally. It's better to charge on a plug socket as you get a std 5v and not something lower that can cause battery heating.

If I hard power down in LP then I lose the 15% grace charge (so when you are at about 15% on KK it will warn you) I cant shutdown the phone normally as I get boot loop when it boots in to charge mode so I have to hold Power down and volume up so shutdown.

The new LP firmware seems to allow for charging up to 100% regardless though so I'm not too fussed about forking out for a new battery the only thing is the charging offset by 15%

My phone is coming up for replacement in about 4 months so will probably Z5 compact.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] crimson12:
I found the hair dryer to be necessary to get the glue loose enough to pry the back off. Basically you just want to heat it up enough to get the glue sticky and "unset". A radiator may work, but I'm not certain.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Oreltub:
I did it with no special tool.. Hair dryer from my mom and leatheman multi-tool..

My only problem was the glue- NEVER USE SUPER GLUE!

Its causes a lot of problems..

Already replaceed my back 3 times.. :(

I don't think you should use radiator, because you don't wanna over heat the battery and the motherboard.. Hair dryer is more accurate..

Xperia Z1 Compact .386 rooted
[Xperia Z1 Compact Q&A, Help & Troubleshooting] camdecoster:
I replaced my battery this weekend and the problem is gone. I used the methods described in this thread and watched some videos from witrigs. I purchased a new battery and back cover from eBay. Here are the links to those items:

Back cover: http://www.ebay.com/itm/291293841067

Battery: http://www.ebay.com/itm/221860385310
[Xperia Z1 Compact Q&A, Help & Troubleshooting] crimson12:
Good to hear! Glad it's all fixed.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] profyler:
damn. i used superglue (because the 3m add was horrible) and now i have to change the back again. should have not done this...
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Oreltub:
Two main problems with super glue -

1. Its very hard to replace the back cover again

2. White mark on the camera lens (thats why I replaced the back..)

For now im using my old glass screen protector with some Tesa tape..

I gave up the water proofing, but the camera is great AND there's no flash bleed (every time i used normal back cover)

Xperia Z1 Compact .386 rooted
[Xperia Z1 Compact Q&A, Help & Troubleshooting] alex_hk90:
Thanks for the advice - what do you recommend to use instead of super glue?
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Oreltub:
If ill use the original cover again ill use adhesive sticker (from aliexpress or something) or silicone glue..

For now this is how it's look like ?
[Xperia Z1 Compact Q&A, Help & Troubleshooting] alex_hk90:
Thanks - I have a replacement cover so hopefully that has some adhesive sticker on it. Otherwise I'll have to add that to the list of things I have already bought to do this: the battery, the cover, the tools (i.e. suction cup, etc.).

For my next phone if there is a feasible choice with a replaceable battery I'm definitely buying that instead...
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Oreltub:
Fyi- the cover don't come with adhesive.. I have one waiting for me in the drawer but I got tired of that sh*t..

Hope Sony will learn from Samsung and will do waterproof device with replaceable battery..

At least they changed the usb.. That's why i have alllll the problems (the usb cover opened up in the pool)

Xperia Z1 Compact .386 rooted
[Xperia Z1 Compact Q&A, Help & Troubleshooting] profyler:
Well, sticker from aliexpress cover are just Sh*t, thats why I used super glue. My lens didnt became white becasuse i only use very little os Super glue. Anyway, i have to be very carefull
[Xperia Z1 Compact Q&A, Help & Troubleshooting] alex_hk90:
To be honest I would rather have a removable battery than waterproof.

I think my cover might have some (maybe weak) adhesive because it has a peel-away transparent plastic layer around the edge and seems to be a bit sticky underneath this. But to be sure I've ordered some thin double-sided sticky tape:

http://www.amazon.co.uk/dp/B005GISZ1M/ref=pe_385721_51767431_TE_dp_1
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Oreltub:
It is little sticky, but not enough..

If you going to use this double sided tape, be sure to cut it correctly..

Update if its working!!

Xperia Z1 Compact .386 rooted
[Xperia Z1 Compact Q&A, Help & Troubleshooting] birnee:
Hey, I'm getting 3/3.5h sot (WiFi,data and high accuracy localisation ON and mostly Web browsing and some social media/music/some YouTube). I guess the battery is close to be dead. What are your sots/battery experience after switching the battery? I remember I could get 2/3 days out of my phone when it was new.

Wysłane z mojego D5503 przy użyciu Tapatalka
[Xperia Z1 Compact Q&A, Help & Troubleshooting] alex_hk90:
Thanks - I finally have everything I need so will try it over this weekend.

I'm just about to replace mine so will let you know.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] crimson12:
My battery life post change is in the op. Granted your issue seems to be a bit different than what everyone else is reporting / changing their batteries for. I'd recommend a factory reset first before replacing the battery if you're not getting drastic drops.
[Xperia Z1 Compact Q&A, Help & Troubleshooting] birnee:
Yeah, forgot to mention that. I do get drops, mostly at around 20%battery dies in couple of minutes. I had a drop at 30%couple of times as well, weird thing is I have noticed I get slightly better battery performance without stamina mode. Few days ago I charged my phone via cable, not by magnetic port and this helped a bit as well (could be my imagination)
[Xperia Z1 Compact Q&A, Help & Troubleshooting] Oreltub:
I replaced the battery without factory reset and the drops has stopped

Xperia Z1 Compact .386 rooted
[Xperia Z1 Compact Q&A, Help & Troubleshooting] birnee:
Looks like this is what I have to do. Thanks for answers.