yashsingh1/xdaforums huggingface dataset:
[Karbonn A21] nikhilrathi10:
Hey Jgsolo27, it would be really helpful if you can provide the guide to root it...also, I am unable to find the drivers for this phone..plz provide the details from where you have downloaded those..
[Karbonn A21] rohith86:
Phone requires more RAM

The phone is needs more RAM..

My camera, browser, video-player crashes often..

---------- Post added at 02:40 PM ---------- Previous post was at 02:34 PM ----------

I am interested, Friend. :)
[Karbonn A21] altruist101:
Guys I'm really seeking answer to this question. Is anyone able to play HD videos on this mobile? I've tried the MX player with arm v7 codecs and the mobo player but all HD videos above and including 1080x540 resolution are lagging heavily.

I'll be grateful for an answer since the max resolution which its playing without any lag is 960x540 which is screen resolution.

Is there any way to play HD videos on this?
[Karbonn A21] droidiser:
Hi there

Everyone here is waiting for a reply from you. Please post the method you used to root your phone. That will help many a people here.
[Karbonn A21] jgsolo27:
Driver files ahd Root Tool!!

Hi Friends,

The required driver files are attached. Open the Zip file and save the Driver file folder and the UnlockRoot Tool in your Desktop.

Connect the phone to your PC and install the drivers.

Once the drivers are successfully installed you phone is ready to be rooted.

Now click open the UnlockRoot Tool and when it's installed (you may have to temporarily disable your antivirus) click the "ROOT" button.

It may say that your phone is already rooted, ignore and press the "ROOT" button. Wait until the process is completed and the phone is rebooted. Now you have your phone rooted. Check with "Root Explorer" or any other application you have.

Note that "Rooting" will void your Warranty and you are doing it at your own risk!!

You are most welcome to hit the Thanks Button.
[Karbonn A21] nikhilrathi10:
Thanks for the details jgsolo27..will try to root when I will reach home...
[Karbonn A21] gagan330:
video playback

I used AVC converter to do the job it did it sucessfully but the size of the file became very large ..Just tryng to find out a way to make it small..

The settings for the AVC (all video converter )are in the attachment .

Use MX Player to run on software decoding
[Karbonn A21] altruist101:
Thank you so much for the reply. I was thinking if there is some way to play HD videos without converting

them. If conversion is unavoidable, we'd rather down convert it to its screen resolution which keeps the size small too. Coming to MX player, I've tried both h/w and s/w codecs but in h/w codecs not all formats supported, only audio plays whereas with s/w codecs there is heavy lag. I've also installed MX player codecs for arm V7 neon but still lot of sync loss and pathetic frame rates. Kindly request everyone to solve this problem so that we can play all HD videos without converting them.
[Karbonn A21] jgsolo27:
CWM Recovery for A21

Pls. try and give us your feedback. There shouldn't be any problem.

Next is to get a working CWM Recovery for our phone!!
[Karbonn A21] ssundar.cse:
pc suit

Hi ,

I have KarboonA21 , would like to have a pc suite kind of software for the same. tired Moborobo its not working for A21

Can you please suggest a similar software for the same.

Thanks in Advance .

regards,

Sundar.S
[Karbonn A21] gagan330:
Thanks jgsolo27:)

I have rooted my phone sucessfully ..:)..Then i installed a swapper application it is working really fast now ..Thanx once again for the tool and the guide:)
[Karbonn A21] altruist101:
Gagan, please do tell me if u're able to play hd videos without any lag. Also please post benchmark scores after using swapper app.
[Karbonn A21] droidiser:
Can anyone else confirm this method to be working. So that if it is, I can update it on my website to help other a21 users.
[Karbonn A21] gagan330:
Swapper

I had searched on the internet and people said that it reduces the sd card life so i uninstalled the app...sorry:(
[Karbonn A21] jgsolo27:
Rooting A21

You don't believe me is it? And you don't believe gagan330 who has confirmed the method to be working, couple of posts earlier? Whom do you expect to confirm it's working? In the first post you have mentioned "Rooting Guide coming soon..." Why not release yours!!

It was my mistake, I should have started another thread instead of giving the "Rooting Method" in your thread!! :o
[Karbonn A21] altruist101:
That's sad to hear. I myself will root this mobile in few days.

Coming to SD card life, one can use an external card to do the job. Life would degrade but still will be in years. The advantage of increasing RAM size are too great to think about an SD card which can be easily replaced.
[Karbonn A21] droidiser:
Hey jgsolo27, it's not the matter of whose thread the method is in. People's devices can be at stake if the tutorial is incorrect with bad files. I don't want to cause anyone any loss. That's why I wanted more people to confirm this. Btw, I didn't read the whole thread, just rolled my eyes over what's happening. So, thanks for stating that it has worked for gagan330. :)

And btw, if I post the method ANYWHERE, I shall surely give you the credit you need. Had I owned the device, I surely would have tested or created a rooting method.
[Karbonn A21] droidiser:
Yes, the life of sdcard decreases due to frequent writing and reading of data from the sdcard. Still, your device only lacks good amount of RAM, and with that RAM, it can surely do wonders with the dual core processor. So, given that fact and that a 8 GB sdcard costs ~INR 200, it's not a bad deal to use swap to increase your ram.

P.S. The decrease in sdcard's life is low. It won't kill your sdcard in few hours/days of using swap.
[Karbonn A21] boomi1977:
Start up problem in My Karbonn A21

Sir,

My karbonn A21 is not getting started. What will be the reason?. Pl. help. I couldn't understand the exact reason.

Boomi
[Karbonn A21] boomi1977:
karbonn a21 booting problem

anybody experienced start up issue in Karbonn A21?. I am facing now. If anybody knows pl. communicate to solve the problem
[Karbonn A21] scorpion2525:
Rooting karbonn a9+

Hi friends,

I jus rooted ma krbonn a9+ with the method suggested by jgsolo27..I big thanx to the guy behind all d hard work..

U ppl(karbonn a9+ owners)can try it on ur own risk as it can brick jur device n it'l void ur warranty..m not responsible

for any unusual things

follow the method by reading jgsolo27's..

hit thanx if it helps u:p
[Karbonn A21] droidiser:
Have you rooted your device?
[Karbonn A21] jgsolo27:
Nice to hear that my method of rooting successfully worked on your device, Karbonn A9+. Thanks for trying it out!! :good:

---------- Post added at 10:19 PM ---------- Previous post was at 09:40 PM ----------

I know that you rooted your phone and that it was working well. Now I could see that it is almost bricked. To proceed further, I want you to recollect all that you did after rooting, ex. the applications installed, the applications uninstalled, any changes made to the settings etc. I and "Itzmiandy" are on the job of extracting the stock Romdump and we are almost through with it. Only when we have it in our hands we can play around further.
[Karbonn A21] gagan330:
Proof that rooting worked for A21

For the people who are not sure that the method would work or not .can refer to the attachment for surety and peace of mind that this method works..And about the swapper the swap.swp file gets created but when free command is used on emulator it shows 0 bytes in the swap field .I think swapper is not supported by the custom ROM.I had not checked that before.Sorry to the people whom had referred the swapper app because of me :(
[Karbonn A21] droidiser:
Yup, most stock ROMs don't come with support for swap memory.
[Karbonn A21] zeyaan:
hey guys 'm planning to get this phone for It's development, but before I pool in my resource I wanna know how is the performance?

any lags o freezing while multi tasking?

do apps start over yen u do multitasking?

how about HD playback and recording?

image quality?

display resolution, is it qHD or 800x480?

I don't wanna waste my resource on a unwanted phone!!! like I did wit a18, which is gone to service center since 20days for faulty screen and software, apps keep crashing!!!

how do u feel using it? plz reply its for stud development. 'm lookin to get this dual core!
[Karbonn A21] altruist101:
Its qHD and screen quality is good. Viewing angles not great. Also HD videos above and including 720p (1080 X 560 onwards) play with lag and sync loss even with MX player. Issue may get resolved with a root and virtual memory partition.

Not great multitasker because of ram. No lags during normal use. If you keep opening a lot of apps and use them simultaneously then don't buy. If u can live with less ram then its great mobile.

---------- Post added at 01:48 PM ---------- Previous post was at 01:38 PM ----------

Gagan, I want to root my phone only to install swapper app. Doesn't swapper work with this rooting method?
[Karbonn A21] ssundar.cse:
HD video

Hi the HD videp 1080p and 720p are lagging heavily. Was able to play the videos in vlc player.

Is there any way this can be made proper ...
[Karbonn A21] droidiser:
Swap support doesn't depends on rooting method, it depends on whether your ROM supports it or not.
[Karbonn A21] altruist101:
Damn, what's the way out then bro? Installing a custom ROM will solve it? And does any custom rom work on a21?
[Karbonn A21] jgsolo27:
Custom Rom?

Why talk of Custom Rom at this stage? Even if you find one, how are you going to flash it into our phone? First of all we need to find/develop a CWM Recovery, then we need to extract the Stock Romdump, (in case something goes wrong we can revert back to Stock Rom). Does anyone has these two? If yes then we can look around for a Custom Rom!! :confused:
[Karbonn A21] anijoe20:
Hi can u help me to upgrade my gingerbread to ics.. I am using a karbonn A9
[Karbonn A21] altruist101:
Not sure of any since i'm new to this. Hope the experienced members do come out with a solution where RAM can be increased by swapper app.

But i think gagan said he'd installed swapper app and device became really fast. @gagan, did swapper work ?
[Karbonn A21] nikhilrathi10:
Check this link..

http://xdaforums.com/showthread.php?t=1659231
[Karbonn A21] altruist101:
Thanks for the link but i still don't know how to use clockworkmod on this. Does the default app on playstore do the job ?? First i guess we have to do a backup so that it can be restored if it goofs.

I want somebody to confirm any working method. Please help and bring out a tutorial to make a swap partition for Karbonn A21. :confused:
[Karbonn A21] gagan330:
Swapper

No will show 0 bytes in swap ,It is not working with stock Rom.It will create the file for swap but when u try free command in emulator it will show 0 bytes in use..pretty sad :( for me too
[Karbonn A21] altruist101:
Oh, then no use of trying swapper without changing stock ROM. Please do update me if you find a solution with or without using custom ROM.

What is the reason for swapper app not working with some ROM's even after rooting?
[Karbonn A21] altruist101:
I successfully rooted my a21 today (thanks to tutorial posted) and installed an app called Swapper for root . Pretty simple though, instructions here http://www.appbrain.com/app/swapper-for-root/org.azasoft.free.swapper .

It has created two files with .swp extension so may be working fine as i'm able to do lot of multitasking and also my empty sd card mem usage says 544mb used. But the free command in android terminal app says command not found. Can anyone help me to check free swap space?
[Karbonn A21] droidiser:
Here's my tutorial for increasing internal memory and ram. Download Quick System info pro or meminfo meminfo to check if swap is actually working.
[Karbonn A21] nikhilrathi10:
Earpiece not working!!

wht d heck..earpiece not working..only loudspeaker!!! for no reasons!! :eek:
[Karbonn A21] altruist101:
Thanks for the mem info check app. It says kernel doesn't support swap. :(

Your tutorial also says that extending RAM is only for ROMs which have swap support. Then flashing ROM is the only way out. Can you point me in the right direction as far as installing a new ROM is concerned?

---------- Post added at 07:06 PM ---------- Previous post was at 06:24 PM ----------

Did you check with other earphones? If yes, then time for claiming warranty.:silly:
[Karbonn A21] altruist101:
Us

Bro, any updates on cwm recovery and custom rom?
[Karbonn A21] jgsolo27:
CWM / Custom Rom

For quite sometime now we have been trying hard to pull out the Stock Romdump, not only in A21, but also in Micromax A110 but have not succeeded. We have tried all known methods! There are many who can and are ready to develop a CWM Recovery for our phone, only if the 'stock recovery.img' is made available!! It's too early to talk about "Custom Roms" :(
[Karbonn A21] sushroot:
hey swapper is supported only by the custom roms. I also tried swapper.But it is not working
[Karbonn A21] altruist101:
Welcome to the club :fingers-crossed: Let's hope the devs here come up with some solution.
[Karbonn A21] droidiser:
Not all custom ROMs support swapper (like the one I'm running on my spice mi 310). Similarly, some stock ROM s support it, like mmx a57.
[Karbonn A21] droidiser:
A guy I know has stuck his A21 in a bootloop. Any solutions you might provide him? Any of you able to extract out the stock recovery?:mad:
[Karbonn A21] Eklovya:
CWM Recovery!

Guyz!

I was thinking of compiling a CWM recovery for your model!

If anyone has rooted his phone can pm me.

I will try to compile one from sources :):good:
[Karbonn A21] droidiser:
Did someone contact you till now? Updated it on op to give you some exposure :P
[Karbonn A21] Eklovya:
Nop.!,

Not a single one :(

And thanx for updating :)
[Karbonn A21] altruist101:
Sorry for being late for this. But i've rooted my A21, tell me what to do :fingers-crossed:

P.S: I've never done this CWM recovery for any mobile, so you have to explain a little what is it that i'm doing. :angel:
[Karbonn A21] Eklovya:
I need recovery and boot.img to compile cwm recovery. When you come online pm me.

I will tell you what to do
[Karbonn A21] Tirathgrg:
I purchased A20 . I installed the drivers given in attachment in my pc.phone is connected to PC now. But I am unable to access sdcard(user memory) in PC please help
[Karbonn A21] droidiser:
You have to turn usb srtorage on in your device. It may be named like "media storage" or something like on your device, and an option to do that shall pop up when you connect your device.
[Karbonn A21] gkgupta.in@gmail.com:
driver files and root tool for karbonn a21

when i adopted this method as explained by you everything goes fine and i received the message that device is rooted, but when i installes titanium backup it says device not rooted. whether there is any other method to see that device has been rooted or not. or is there any other method to root my Karbonn A21

---------- Post added at 08:10 PM ---------- Previous post was at 07:50 PM ----------

Dear Friend

Moborobo works perfectoly for Karbonn A21. All you have to do just install the drivers provided then moborobo works perfectly.
[Karbonn A21] raveesh84:
Getting Same problem

I am also getting same problem..pl help...
[Karbonn A21] vinroid82:
experts pls help geting the same problem...done everything as directed, bt swapper nt working as well titanium showing nt rooted...pls help guys...thnx!!!
[Karbonn A21] ssundar.cse:
System not getting rooted

Hi i am also getting he same error

The exact error is

"sorry I could not acquire root privileges. This applicaiton will *not* work !. Please verify that you ROM is rooted, and try again.

This attempt was made using "/System/Xbin/Su" command.
[Karbonn A21] raveesh84:
Exactly I am facing the same issue when installing Titanium backup..lets see if there is another way to help us out
[Karbonn A21] Eklovya:
here is the thread for CWM recovery

http://xdaforums.com/showthread.php?t=1993824

Dont forget to hit thanks and be the first tester so get CREDITS ALSO :)
[Karbonn A21] mengfei:
they say these carbon is the same as the Cherry Mobile Flare which should be on sale today in Phil., i wonder if it can be rooted the same way.

Cherry Mobile Flare

http://www.pinoytechblog.com/archives/cherry-mobile-flare-review-is-it-really-worth-p3999

http://kristn.com/index.php/article...d-know-before-getting-the-cherry-mobile-flare
[Karbonn A21] c10do:
720p videos run smooth

Hi! I am a Karbonn A21 user one of the early adopters and the ones who got shocked by the low RAM and all. But I am glad to say that 720p videos run flawlessly on my phone, 1080p is another story altogether, it lags and skips audio and is unwatchable.
[Karbonn A21] karanmirchandani96:
how can i get karbonn a21 stock firmware?
[Karbonn A21] ankitmishra0411:
Rooting

I have successfully completed the rooting procedure .

But even after installing the drivers i am not able to use the phone in the usb tethering mode. It says that no driver found for this hardware plese tell me how to fix that
[Karbonn A21] karanmirchandani96:
I am writing now is the most easy method to install adb driver for the Karbonn and other android device.

download pdanet pc client:- http://junefabrics.com/android/

start the installer and go through it

installer will ask you to select manufacturer then select other

installer will ask you to connect a device

turn on the debugging option in setting and connect the device through usb

driver installation will occur automatically

select yes for installing driver

when pdanet installation is completed

open up adb and write adb devices

daemon will start and you will see ur device listed

thats it you are done, have a great adb'ing

sent from Samsung galaxy S i9003 Remics JB v3
[Karbonn A21] gagan86:
Dev's plz some one upload stockrom of a21 with flashing procedure.because if phn is bricked during rooting and appling cwm recovery procedure

phn can be unbricked by flashing stock rom. Plz some dev's should come forward to develp a custom roms and mods for this device like there is a good development in mmx110 thread
[Karbonn A21] Tirathgrg:
I want to hard reset my phone.please someone give me a hard reset code for a21
[Karbonn A21] adarpatel:
I am facing the same issue.

Everything goes fine with the rooting procedure.

It also reboots the phone but after which none of the applications recognise this device as rooted.

Installed "Root Explorer" and checked the SU in the /system/xbin/ and it is there. but Root does not work.

The popup for granting root permissions does not come up.
[Karbonn A21] karanmirchandani96:
root problem solved

uninstall super user and download super user from market .you will get force close once .then it will work fine.
[Karbonn A21] raveesh84:
Well it was downloaded from Play Store already..
[Karbonn A21] karanmirchandani96:
Yes but unisnstall it then reinstall

sent from Samsung galaxy S i9003 Remics JB v3
[Karbonn A21] gauravg:
Not rooted with jgsolo27 guide

Hi,

I installed the drivers for Karbonn a21, and used the unlock tool, using jgsolo27 method.

Clicked on the green button, and it said root successful after a couple of minutes.

However root check still says that the phone is not rooted.

Can you please assist?
[Karbonn A21] karanmirchandani96:
go to this site http://www.droidiser.com/2012/11/how-to-root-karbonn-a11-a9plus.html and root ur phone
[Karbonn A21] karanmirchandani96:
People are facing root problems.

This is solution

Uninstall super user

Then again download super user from playstore

then open superuser

Then super user will ask to update binary then update binary and all problem solved

sent from Samsung galaxy S i9003 Remics JB v3
[Karbonn A21] Nishchay1:
The Phone has great potential !!! i beg all developers to please try and make a cwm and a tell us proper rooting method !

and last but not the least.. a stock firmware which we can flash if ur phone gets bricked ! People at karbnn service centers are pathetic !

devs here can achieve the impossible ! keep trying !!!:D:fingers-crossed:
[Karbonn A21] gauravg:
Tianyu HS-USB Android Modem 9025 driver not installed error

I am using windows 7 and tried to root karbonn a 21 using PDA net drivers,

After rooting using the unroot tool, the reboot leads to an error message

"Tianyu HS-USB Android Modem 9025 driver not installed error"

The root check shows that the phone is not rooted.

Please assist
[Karbonn A21] karanmirchandani96:
Hello all.

Here's CWM recovery, built from the latest version included in the ICS sources. It has support for both internal and external sd card, with the internal being the default. As such, the internal has mount point /sdcard, and the external has /external_sd. Nothing you should normally need to know, unless you want to mount them manually in adb shell.

I provide it in two packages, dependent on how you want to flash it. One for flashing manually in adb shell, and one for flashing with Odin.

recovery-clockwork-6.0.1.9-ancora.zip -> for flashing in adb shell

Don't flash the zip file, but extract and flash the img file.

recovery-clockwork-6.0.1.9-ancora.tar.md5 -> for flashing with Odin

Select the ops file, and enable one package in options, then load the md5 file with the One Package button

In addition, you need Ancora.ops it you're gonna flash it with Odin.

<br />

How to navigate in menus:

Volume buttons = go up and down

Home button = select

Power button = go back

I'm too busy right now to write further extensive instructions, so if anyone else would want to do it, that would be great. Otherwise refer to the RZRecovery thread on how to flash in adb shell.

sent from Samsung galaxy S i9003 Remics JB v3
[Karbonn A21] gauravg:
Bin4ry method works for rooting !

I was unable to root using the jgsolo method posted on various websites including this one.

However, after installing the drivers using PDAnet, I used bin4ry method which is a generic method for all ICS phones, and the root checker now confirms that the phone is successfully rooted.

http://xdaforums.com/showthread.php?t=1886460

However, I would love to increase the RAM, and apparently the stock Android does not support Swapper.

Any tips on this would be appreciated
[Karbonn A21] Eklovya:
To all a21 users the cwm recovery by me is finally working.
[Karbonn A21] Tirathgrg:
Hi Eklovya it is good to know that finally we have working cwm recovery for our a21 .please upload the file and method to apply it&give full details
[Karbonn A21] Nishchay1:
Recovery pleaseee!!! :( Its not wwrking ! tried too flash it thousand times !
[Karbonn A21] theboyzrockz:
Beats Audio problem

Hi,

I am new to the android world. I have successfully rooted my Karbonn A21.

I found Beats Audio installer on Play and gave it a try. Rookie thing I did is that I did not take a backup (all those years with iOS taught me nothing :D ).

Now the audio on my phone is wasted. All I hear is a loud hiss instead of any sound(notification/ringtone/songs). Though if I stream a video on YouTube, it plays seamlessly well. I guess the Beats Audio has ruined the decoder on the platform(if that even makes sense).

I don't know how to fix this. I downloaded the recovery.img from Eklovya. followed the steps given on his post but I don't know how to proceed from after there.

Can someone please give me a layman approach to it (recovery from the .img file) or guide me to the correct forum/topic?

Also, (being very ambitious here) did anyone try loading the stock JB on A21?
[Karbonn A21] karanmirchandani96:
Try a factory reset ...

sent from Samsung galaxy S i9003 Remics JB v3
[Karbonn A21] theboyzrockz:
Tried that first thing. Did not work.

Anything else? :confused::confused:
[Karbonn A21] karanmirchandani96:
Before flashing that file did you made back up of ur system?

sent from Samsung galaxy S i9003 Remics JB v3
[Karbonn A21] theboyzrockz:
:o No..
[Karbonn A21] karanmirchandani96:
Check in your SD card is there any universal named folder?

sent from Samsung galaxy S i9003 Remics JB v3
[Karbonn A21] theboyzrockz:
No. No folder like that.
[Karbonn A21] karanmirchandani96:
From where did you flashed the file send me the link

sent from Samsung galaxy S i9003 Remics JB v3