yashsingh1/xdaforums huggingface dataset:
[ZenFone 2 Q&A, Help & Troubleshooting] gopzzz:
It's because of cache memory getting filled up after a longtime use or frequent rom update. always wipe cache atleast once in a month or after every flash.

Steps: (if u are still in zenfone stock firmware with OTA updates)

1. Turn off you Zenfone 2

2. Press and hold Power button + Volume Up together for few seconds.

3. When the phone is vibrating, release the Power button. You will see Normal boot and Recovery boot options to select.

4. You can select Normal boot or Recovery boot by pressing Volume up/down button. To enter Recovery mode choose Recovery boot.

5. You will see sleeping android robot. Press Power button + Volume Up and release the buttons. You are now in Recovery mode.

6. If the 5th option does not work for you, press and hold Power button, then (while holding power button) quickly press Volume Up and release and then release power button.

Use vol up/down to navigate to wipe cache and select using power button. Wait for 8 - 10 minutes until it is complete.

7. Now, to exist from recovery mode, just select reboot option or press and hold the power button for a few seconds to force it to reboot.

This really works and gives you the Battery life as it was on its new phone.

Hit THANKS if this has helped you.
[ZenFone 2 Q&A, Help & Troubleshooting] threi_:
Seems like pretty much every android phone and tablet ive used.

The longer you own it the worse the standby drain gets...and then the manufacturer gets blamed, software "bloat" gets blamed, everything gets blamed except the one thing that should be blamed...google's services running in the background chewing up battery but giving under "play services". All the nexus devices i've owned have been no different.
[ZenFone 2 Q&A, Help & Troubleshooting] AnTerNoZ:
Thanks for that hint. I'm new to ZF2 doesn't know till now how to clear cache from recovery caused by the update fail in recovery.

It maybe better to root stock rom just for amplified and grenify with xposed, kept alot more power on my other devices.
[ZenFone 2 Q&A, Help & Troubleshooting] android lover 2000:
I think the problem lies in android lollipop and x86 architecture ..... Arm architecture is still the best (maybe, kyro will be better)

Once we get marshmallow the idle battery drain shall be gone , so shall be the notifications too!!!

Its just that you cannot get moto e like battery but still there are one plus users with custom kernels getting 6+ hour sot and 3 day idle longevity

So there shall be hope for someone to make a new kernel especially for x86

Btw, use echoerom just google "echoe rom zenfone 2" thats a asus stock based rom so you wont miss zen ui too, and has got good performance and battery for some reasons.
[ZenFone 2 Q&A, Help & Troubleshooting] Twotems:
Don't know what you're doing wrong but my son's has been on standby for almost 5 days with 25% remaining.
[ZenFone 2 Q&A, Help & Troubleshooting] darklink987:
I would blame 5.0, I haven't tested custom roms like CM, but let's hope it goes away in 6.0. My battery standby looses about 10-15% in 8 hours on standby. I use Superzen and I'm on. 139
[ZenFone 2 Q&A, Help & Troubleshooting] agm2112:
I don´t know what I´m doing wrong ... the battery life on my zf if good to excelent.
[ZenFone 2 Q&A, Help & Troubleshooting] Chocketbear:
If most phones could be tested out for one month of before buying, most of them wouldn't be bought. this ZF2 has many issues that they still haven't fixed with OTA's. I'll never own another one, I'll go back to Samsung on my next one.
[ZenFone 2 Q&A, Help & Troubleshooting] dongnguyen2301:
Actually since I bought my phone, it took me only 3% for every 7 hours. It's even as low as an Iphone

---------- Post added at 03:51 PM ---------- Previous post was at 03:47 PM ----------

This. I dont know why so many people complain about Zenfone 2's battery life. I am a very detailed use, I checked the battery percent every night before going to bed, and based on my data, my phone will stay idle for 9.7 days before it's gone flat

---------- Post added at 03:54 PM ---------- Previous post was at 03:51 PM ----------

To be honest, I would consider it a big failure if you spend 15% for 8 hours of stand by, especially you're rooted, which means you should have be capable of doing much more than I do...
[ZenFone 2 Q&A, Help & Troubleshooting] Twotems:
Bye, bye and don't let the door hit you on your way out! My Zenfone 2 is better than any Samsung I've ever owned regardless of price.
[ZenFone 2 Q&A, Help & Troubleshooting] sdrawkcab3:
That would be great!

Mind posting a screen shot of your battery screen? Or let me know what the top 3 drains are on his phone. It may give me a clue about where the drain is coming from.
[ZenFone 2 Q&A, Help & Troubleshooting] Twotems:
Here you go. Greenify and Autostart Manager only. This is the 2GB Z550ML model but my ZE551ML is the same.
[ZenFone 2 Q&A, Help & Troubleshooting] i snort flour:
You guys are all wrong. It's Obama's fault. Damn you Obama!
[ZenFone 2 Q&A, Help & Troubleshooting] sxcs1991:
There is something fishy about this phone. Not all zenfones have good battery life. Some ZF2 has very good battery life, some ZF2 has battery drain like hell. Since the os and the firmware is same, I have doubt that every zenfone 2 has same quality battery (or does every phone has 3000mAh battery actually?)
[ZenFone 2 Q&A, Help & Troubleshooting] benbugohit:
Do they have facebook and facebook messenger set up and running ? and you ?

i found these apps to be battery drainers when i used to have a facebook account.

Did you have a look at wakelock detector/better battery stats ?
[ZenFone 2 Q&A, Help & Troubleshooting] darklink987:
But do you have Facebook messenger, Facebook and Snapchat installed? Those are all battery hogs and are unoptimized as hell on Android compared to their IOS versions. I would also blame those, even with greenify.

EDIT: Quoted the wrong person, sorry for that, I fixed it now.
[ZenFone 2 Q&A, Help & Troubleshooting] Chocketbear:
Well this is cute, why don't you do a little Google searching on ZENFONE 2 issues before opening your hole? and not to mention the fact that their support is really lacking much like your knowledge!!
[ZenFone 2 Q&A, Help & Troubleshooting] Twotems:
Lol. I've had mine for 9 months and love it. It's actually the longest I've kept a phone. As for their support and customer service, my son's screen had a meltdown whilst charging and Asus replaced it with a brand new one immediately without a quibble. So yeah, I think I know a little bit about the Zenfone 2. Enjoy your laggy, expensive and truly bloated Samdung!
[ZenFone 2 Q&A, Help & Troubleshooting] blazzer12:
Wierd because my ZF2 has awesome idle battery usage. I charge it to 100% before I sleep. When I wake up in the morning the usage is <2% per hour.

Some apps are keeping your phone awake. Install same app that detects and see whats up.
[ZenFone 2 Q&A, Help & Troubleshooting] misfitpierce:
Its not the phone or its battery that is fishy. People will have different experiences based on what they install. Like facebook app, did you know that even when you force close it it will pop open some services like LollipopUploader and Bugreporter and do things in the background eating away at standby time. So essentially its just what people install on their phones that causes the variances.

I can do about 4 days of standby with some usage. Few calls here and there and quite a bit of text. Im on CM13 with FlareM kernel with xposed installed and running Greenify and Amplify. Amplify limits how frequent wakelocks are and greenify ensures all apps idle correctly.
[ZenFone 2 Q&A, Help & Troubleshooting] kojata:
Indeed. Not only 5.0 but 5.1.1 too. Cm roms drain much battery too. So it's up to Lollipop to blame. Most eating process is Android OS, no matter stock or CM based rom. If there was a KitKat rom I would be the most happier person :)
[ZenFone 2 Q&A, Help & Troubleshooting] i snort flour:
Don't you realize you are talking to veteran in the smartphone universe? I mean seriously that guy has 59 posts and has been thanked 0 times in 0 posts. There is so much knowledge and experience behind his belt that we should blindly follow him to alien spaceship by drinking the koolaid. Just search the internet on customer service with Samsung and you won't find any negative experiences at all (heavy sarcasm as Samsung has bad customer service practices as do almost all companies) but decent products for the most part.

---------- Post added at 03:49 PM ---------- Previous post was at 03:27 PM ----------

You also need to do a little Google searching. Asus has been one of the most supported phones I've ever owned and I've had Motorola, samsung, oneplus, lg, xiaomi, and asus. Asus has constantly kept up releasing security patches and fixing most of the stuff that was wrong in 5.0. As this is no Nexus phone so the updates for fixing the firmware problems in 5.0.1, 5.0.2. were rather pointless as it was mainly Wi-Fi related.

5.1.1 wasn't nothing special either and I highly doubt most people here would have seen any improvement outside of the 2g ram model other than lower benchmark scores and not being able to run as high of fps in gaming (as was the case with my Xiaomi anyways but having only 2g ram was able to run smoother with more background processes). Not only do they push these updates and bug fixes frequently but they have their own forum page on their own server just to address people's questions, wants and needs. Only a couple of phone companies do that and most of them are extremely biased (Xiaomi for instance will ban or delete your posts/threads if they don't like what your saying or asking for) plus for the longest time they had a rep browsing and helping people on xda. Does support only mean android os upgrades to you because news flash most companies haven't pushed marshmallow yet to their devices and a few that are pushing marshmallow never even pushed lollipop.
[ZenFone 2 Q&A, Help & Troubleshooting] hypertech:
since the last ota update, i cant even pass the morning...06h00 am i unplug from full then arount 11h00 am the batterie is at 5%, without using the phone at all.

before that update, i was able to use my phone after my day of work and still have 48%. thats why i hate these update, i dont see any improvement, but keep getting worst experience.
[ZenFone 2 Q&A, Help & Troubleshooting] Twotems:
Good one. I did notice his large number of thanks but refrained from commenting. But I too was a newbie kool-aid drinker once and learned through forums like this. What I've learned is the knowledge and power of the forums. Post a legitimate gripe with a vendor, manufacturer or app developer on here especially and elsewhere, and they wake up VERY quickly to your needs. As for phones, the Zenfone2 is hands down the best value phone of 2015. Perfect? No. But it's an excellent phone and I'm still waiting for an equivalent Worldwide Frequency, Dual-sim phone that can match it for price and amazing speed and smoothness.
[ZenFone 2 Q&A, Help & Troubleshooting] i snort flour:
Depends on what you wanted it for. I mean the camera really really sucks but everything Toshiba makes sucks so I expected that and being an x86 it's not a good gaming phone as most games aren't very compatible with x86. I would say the oneplus one was generally the best phone for the dollar but everybody has their own taste.

---------- Post added at 04:01 PM ---------- Previous post was at 03:55 PM ----------

Bad flash download the firmware off of the website, reboot into recovery, clear cache and reflash. It should solve your issue
[ZenFone 2 Q&A, Help & Troubleshooting] Twotems:
It's all about expectations for me. I don't expect great camera performance from any phone and don't buy based on it. Phone cameras are point and shoot for me, capture the image or moment. For $299 I don't care given the rest of the performance.

One more thing, since this is a battery thread. My sot today is 2hrs 25mins from 4:30am (19 hrs) with 30% remaining. Probably 1hr of browsing and 2hrs of whatsapp calls and gsm calls. So........... If I had to top it up, 15 minutes of fast charging will probably get me through the day tomorrow. No, I don't have a battery problem.

---------- Post added at 10:13 PM ---------- Previous post was at 10:07 PM ----------

OnePlus. Nope. No sd, no nfc and I forget my other gripes. Zenfone 2 is still cheaper and a better value. Gaming wise, mine (ZE551ML) runs great on my son's games (Modern Combat etc) and it's a battle getting it back from him and he only uses mine because his Z550ML didn't have a big enough sd card before. Now he doesn't bother me any more. Did I say SD card again? Hmmmmm, hello Samsung et al. ;)
[ZenFone 2 Q&A, Help & Troubleshooting] Chocketbear:
I have opened case through ASUS and have been in Email contact. LMAO about a post count, get a life man!!:o

---------- Post added at 06:38 PM ---------- Previous post was at 05:53 PM ----------

Still though, that doesn't mean they don't have some phones out there without hardware issues. Maybe you have a phone that doesn't, but I can't say that about mine.
[ZenFone 2 Q&A, Help & Troubleshooting] Twotems:
And what case is that exactly? Please enlighten us.

If you want to know why a Thanks and Post count are relevant, I'll give you my experience on xda. I have no idea what twrp or anything else is. I only root phones that are compatible with a one root click type solution. In other words I'm an "average" user under the circumstances. But I change phones by habit and always have two double-sim phones because I have four international numbers that roam wherever I am.

Here's a quiz for you: Name a dual-sim, pentaband wcdma, worldwide lte, 5.5 inch, 1080p, nfc, sd, 3000mah battery, phone that can match this monster and I'll concede.
[ZenFone 2 Q&A, Help & Troubleshooting] BigDavy:
This battery argument has me puzzled. It has never been an issue for me, not being a power user like some here the ZF2 has more than enough battery power to last until I can charge it again. After Asus issued Auto start manager I checked how long my phone would last between charges and I got four and a half days of normal usage on stock firmware.
[ZenFone 2 Q&A, Help & Troubleshooting] Twotems:
What he said.
[ZenFone 2 Q&A, Help & Troubleshooting] i snort flour:
Oneplus one had nfc with tons of development (no dual sim though i forgot about that) while the oneplus two and oneplus x doesn't. I personally don't use or like nfc and don't need dual sim in the states. With 64gb hard drive and otg support so a sd card for almost anybody isn't really needed as 64gb is a lot of space plus you can buy usb sticks and a otg cable dirt cheap if you need to move some stuff. Your son probably don't play the newer more intensive games but there are games out there that this ZenFone 2 just simply couldn't handle at 60 fps (dead effect 2 i think is one of them which the oneplus 2 [$406 64gb 4gb ram] with beoffola kernel can) plus I have seen videos of this phone playing older not as intensive version of that game at only 15 fps (dead trigger 2). But as you said the phone costs a bit more and stock os is a bit buggier with very little development because of the laser auto focus and fingerprint drivers which are currently unavailable outside of stock rom. Stock rom updates are few and far between and often solve the minor bugs leaving major bugs still there.

You paid $299? I got mine on sale at newegg just after xmas for $269 (64gb 4gb ram) with a free ASUS 10050 mah battery bank.

Like you said though it depends on what a person is interested in. I think it's a great phone for the money. Better signal than my Xiaomi mi3w($280 16gb 2gb ram), louder speaker so you can actually hear calls in your pocket, lte and asus has a lot of nice apps that do the same things as all those xposed based battery saving apps.

As you said beings this is a battery forum and pictures are worth a thousand words here's a few of mine on the non standby side beings standby side has been illustrated.

Usage: some porn(great porn machine), couple hours of music, lots of tapatalk (reading and posting), hours of playing solitaire, hours of online shopping and browsing.

Standby: about 1% loss every 2 hours

Which is dead on with my power savings option I have selected.

power saving(200 hours standby)
[ZenFone 2 Q&A, Help & Troubleshooting] Chocketbear:
I've been rooting phones for years now and many different ways too. I haven't rooted my Zenfone 2 yet because I wanted to use it a couple months to make sure there wasn't any hardware issues. I have two other phones that are rooted and can run my same sim without any issues. after several emails explaining the problems I've had, their only answer was to wipe data, cache and do a reset of the phone., which I did two times even before getting in contact with them.

I've done OTA's from the the 139 firmware hoping it would fix the issues and it still continues. I want to think it's hardware because all the updates aren't doing much to resolve it.

The issues I'm having are.......

Dropped calls

Poor reception on many of them

Phone does not ring half the time and calls go straight to voicemail.

Voicemail notification in status bar that stays even after deleting the voicemail " you have to clear the data in the app itself "

Sometime people can't hear me on the other end but I can hear them.

These are some of the issues but there are a couple more. so if you look at the issues you'd think maybe it's my carrier and APN settings. But I've checked many times myself and taken this phone into them and let them check them too to be sure. So can anyone in here tell me why I can use the same sim in another phone and it doesn't have any of these issues?

Now as far as a post count or someone thanking me, I'm an adult that has his own business and I use this phone in it too. I don't need people to like me on the Internet to feel like I'm all groovy and cool.......I'm successful all on my own and I just want to get this damn thing working, but so far it's been nothing but a cluster****!!!
[ZenFone 2 Q&A, Help & Troubleshooting] Twotems:
I don't know where you are or where you got your phone from but Asus USA treated me very well. Get a replacement. Those sound like hardware issues and the inability to even make or receive calls is a fundamental flaw that should be covered.
[ZenFone 2 Q&A, Help & Troubleshooting] Chocketbear:
Thanks. I just wish it was something where the phone would just die. But when it's issues like these, It's really hard getting support to understand. Wiping data, cache and resetting isn't the cure for everything.
[ZenFone 2 Q&A, Help & Troubleshooting] Twotems:
Yeah. That stock answer they give over on Zentalk is infuriating. Call Asus, forget emails and forums. I called and was sorted out in 15 minutes.
[ZenFone 2 Q&A, Help & Troubleshooting] Chocketbear:
Lol, I'm going to do that now. what happened was I dropped my old phone and broke the digitizer and it was useless. So I looked around in here and bought my ZF2 from Newegg. But the issues have drove me crazy and I've since replaced my digitizer in the S4 and now have a solid backup I can use for my work. I was just in a spot where I really depended on my ZF2 and that's when all the poo started.

Other than the call issues I like my ZF2, It's just been rough fighting this thing.
[ZenFone 2 Q&A, Help & Troubleshooting] jhenu:
I tired above steps.... I have ended up with a dead android bot and "error" text flashing. Device is not booting at all.... Still in stock rom amd recovery.... Any easy way out. I'm having lot of unbacked personal data... Which I would regret for life if lost... Please help me.
[ZenFone 2 Q&A, Help & Troubleshooting] MikeyLee:
That's the problem with consumers. Zero faith. If ASUS didn't care about the issues they wouldn't be working on the 6.0 release. Think about it. The phone was shipped when 5.0 was new. Would it make sense to update to 5.1 or work on 6.0 since it's been available for several months? If they worked on a 5.1 update they are essentially working backwards. I came from Huawei and before them from Samsung and to me there is no bigger disappointment than Samsung releasing devices without SD card slots. With any Samsung device you'll never have the potential to have 256gb of total storage.
[ZenFone 2 Q&A, Help & Troubleshooting] i snort flour:
Too late I already think you are groovy and cool. Don't get too overwhelmed I really didn't mean to stroke your feathers that way. Asus really isn't that bad of a company in comparison except in India and Asia in general but in India and Asia all companies are kind of bad to them it seems. Sorry you got a lemon but lemons do happen just call them and send it in for replacement. Your not in Russia by chance are you?
[ZenFone 2 Q&A, Help & Troubleshooting] Chocketbear:
When I made my statement about using phones for about a month, I was talking about all phones...not just the Zen. I understand then when I buy my own phone and use it unlocked I'm the one responsible for getting it going on the network I pick. I've had this phone since November and it's been having issues that no wiping, reseting will take care of the issues I've had. I have my old phone working now so I maybe send it back to Asus and hopefully get things working right.

---------- Post added at 07:15 AM ---------- Previous post was at 07:11 AM ----------

OK, I was being a little bit of a smartarse on the cool and groovy thing. but Snort, I'm in central Florida and I saw that update for their phones. I've just come to the conclusion that I have a phone that needs repair or replacement. I must say, this thing has got under my skin more than my Ex-wife ever did. It's good to see people in here aren't having the issues I have, there is light at the end of the tunnel, I guess!
[ZenFone 2 Q&A, Help & Troubleshooting] gopzzz:
Sorry for the delay.

Nothing to worry. just power off by pressing power button and restart after few minutes.

To enter recovery, (when android lies down with error!!) then press powerbutton and press vol up once. it will go to recovery selection to wipe cache.

Note: wipe only cache...your data will be safe.
[ZenFone 2 Q&A, Help & Troubleshooting] jhenu:
[MENTION=994334]gopzzz[/MENTION] thanks alot buddy. Just elaborated your method in this post.
[ZenFone 2 Q&A, Help & Troubleshooting] venomus001:
That'd why i gave it back and took zf2 laser ....intelx86 and x64 realy still a worl in progress
[ZenFone 2 Q&A, Help & Troubleshooting] vernel1008:
finally someone nails it. Asus had been very dedicated with their support both in Software and Hardware side. I even experienced their Hardware Support. My Tablet only had a problem with squeaky back cover but they replaced the Mobo, the side chrome and lcd (looks like a brand new tablet). Now that is what I call customer service.
[Nexus 6P Q&A, Help & Troubleshooting] Salval:
I've tried a few methods of getting recovery back but so far have failed. I always end up with that droid and a red warning triangle, which if left long enough it will boot into android on its own.. Any help would be greatly appreciated.
[Nexus 6P Q&A, Help & Troubleshooting] Soulfly3:
what "few methods"?
[Nexus 6P Q&A, Help & Troubleshooting] Salval:
I got it cleared up. Admins feel free to delete this thread. Thank you.
[Nexus 6P Q&A, Help & Troubleshooting] yamahakid:
I'm actually having this issue as well, I'm curious what you did to solve it?

I flash twrp with fastboot and get the red triangle when I attempt to boot into recovery. However from fastboot if I do the boot recovery.img command, twrp will boot up and run fine, but I cannot boot back into recovery straight from the bootloader, without booting from fastboot.
[Nexus 6P Q&A, Help & Troubleshooting] dratsablive:
When you get the Triangle press power then volume up.
[Nexus 6P Q&A, Help & Troubleshooting] yamahakid:
Am I holding down the buttons until it reboots? Or just pressing the combo once?
[Nexus 6P Q&A, Help & Troubleshooting] Salval:
I'm not sure what the true issue was in my case. I downloaded another copy of twrp, flashed it and everything worked out. Bad cable or corrupt file maybe. I'm not sure.
[Galaxy Note 8.0 (Tablet) Q&A, Help & Troubleshooti] andrei1412:
Note 2 ROMs will work on Note 8?