[Q] Samsung Galaxy S duos s7562

xpacguy · Sep 30, 2012

Do any one have performance issue with Samsung Galaxy S duos s7562.
I am very much disappointed with my device as it will get stuck on screen. Huge Lag time. Will take time to go to application after clicking on icon. Cannot play HD videos. While receiving calls the screen will go black, You can hear the ring but cannot see anything on screen. Any help will be appreciated.

tristone · Oct 8, 2012

Thanks vikassaini01,
it is working.

voom · Oct 8, 2012

tristone said:
Thanks vikassaini01,
it is working.

Thank you! But: I do / did use the latest drivers (exactly those) and the problem persists: When in Download-Mode, two drivers are attempted to be installed (showing MSM7x27 at first), but the installation fails and the device can not be activated, thus I can't connect Odin. I get "Samsung Mobile USB CDC Compatibility Device" in Devicemanager, but no "Android Phone" in Download Mode. It looks as though it gets the wrong driver. I tested this on two PCs, one had no previous installations of any Samsung Drivers. Same thing...

SOLUTION: I always rebooted to bootloader by adb reboot bootloader - now I managed to start as described with the devices buttons - and now the right driver is installed properly - Odin connects and everything went fine: GOT ROOT

abendroidx · Oct 8, 2012

guys just a suggestion as this phone is now widely available maybe we can ask for the mods to add a sub category in galaxy s forum for this device so we can start organizing

in case something goes wrong its always good to have a stock rom:

http://www.sammobile.com/firmware/?page=8&view=6815

http://www.hotfile.com/dl/174964833/3022afa/S7562XXALHB_S7562DBTALH3_DBT.zip.html?lang=en

---------- Post added at 02:20 PM ---------- Previous post was at 02:08 PM ----------

vikassaini01 said:
ANYBODY WHO DOWNLOADED THIS RECOVERY.TAR, PLEASE REDOWNLOAD. THIS VERSION WORKS MUCH SMOOTHER.

Hi,
Press The following combination for booting into recovery. (Works fine for me)
Keep all of them pressed until you see the samsung logo and then release them all.

Vol. UP + Vol. Down + Home + Power On

CWM and Odin is attached. Flash this CWM package using odin (make sure you reboot your phone into download mode for using odin)

I'm NOT responsible for any brick or other mis-happening. I tested it all on my galaxy S duos and it works fine.

Just curious which version of CWM is attached

robert__ · Oct 8, 2012

vikassaini01 said:
....

Will this work with non-Indian StockROMs? Is the CWM you posted specific for India?
>> It should work because they all have the same hardware.

....

I'm not sure only one hardware version exists...

If you go to http://opensource.samsung.com and search for S7562 you will find 8 sofware images.
It seems they have different images for different regions, such as CHN (China) and TW (Taiwan). In addition to images for MEA, SEA and SWA (no idea what regions those are).

But it also lists a S7562I and a S7562L, which may be different HW versions. The 'I' version is perhaps India?

tristone · Oct 8, 2012

European model has Model number GT-S7562, baseband S7562XXLH5 and Build IMM76I.S7562XXALHB.

And the root works.

robert__ · Oct 8, 2012

Thanks vikassaini01

I did the rooting and it worked. FYI my phone was bought in Germany.

I did however have to boot the phone quite a number of times until I finally managed to get into CWM to install SuperSU.

Now I can try to rid the phone of some of the preinstalled junk, and switch the sdcard and ExtSdCard mounts around.

tristone · Oct 8, 2012

robert__ said:
Thanks vikassaini01

I did the rooting and it worked. FYI my phone was bought in Germany.

I did however have to boot the phone quite a number of times until I finally managed to get into CWM to install SuperSU.

Now I can try to rid the phone of some of the preinstalled junk, and switch the sdcard and ExtSdCard mounts around.

Let us know if you succees with the SD switch. I am planning to do it also but I am not sure if I will have time soon to play with that.

voom · Oct 8, 2012

robert__ said:
Thanks vikassaini01

I did the rooting and it worked. FYI my phone was bought in Germany.

I did however have to boot the phone quite a number of times until I finally managed to get into CWM to install SuperSU.

Now I can try to rid the phone of some of the preinstalled junk, and switch the sdcard and ExtSdCard mounts around.

Mine's also german

I downloaded the german Stock FW from sammobile before trying to root, otherwise I would have waited for other people from Europe to successfully root this way first before experimenting with it.

Getting the bootoptions right with the buttons on the device really is a hassle. That's why I used adb in the first place, but then... (...the drawback I posted above...)

The S Duos has a curios setup with the storage-mounts. I am not quite sure if I understand that right. What are you expecting to achieve with the modifications you mention?

tristone · Oct 8, 2012

Hi voom,

It is easy to understand what you get by switching sd cards. You would be able then to install huge application , for example offline navigation software, which may not fit in those 1.8 GB of internal SD ( /sdcard ). Right now it is known problem for TomTom navigation which requires 3.3 GB on /sdcard and doesn't see that there is plenty of space on /mnt/extSdCard.

OT: I have phone bought in Czech Republic.

robert__ · Oct 8, 2012

tristone said:
Hi voom,

It is easy to understand what you get by switching sd cards. You would be able then to install huge application , for example offline navigation software, which may not fit in those 1.8 GB of internal SD ( /sdcard ). Right now it is known problem for TomTom navigation which requires 3.3 GB on /sdcard and doesn't see that there is plenty of space on /mnt/extSdCard.

OT: I have phone bought in Czech Republic.

Indeed, that is the idea. After installing some fairly basic stuff, I only had ~1GB left which is insufficient for large apps like offline navigation.
However, you may find that the internal storage is quicker then the actual SD card, so you may want to check that you don't slow down your apps.

I installed busybox, and ran the following;

Code:

# time dd if=/dev/zero of=/mnt/sdcard/testfile bs=104857600 count=1
1+0 records in
1+0 records out
104857600 bytes transferred in 9.128 secs (11487467 bytes/sec)
    0m9.18s real     0m0.00s user     0m1.07s system
# time dd if=/dev/zero of=/mnt/sdcard/testfile bs=104857600 count=1
1+0 records in
1+0 records out
104857600 bytes transferred in 10.297 secs (10183315 bytes/sec)
    0m10.37s real     0m0.00s user     0m0.96s system
# time dd if=/dev/zero of=/mnt/sdcard/testfile bs=104857600 count=1
1+0 records in
1+0 records out
104857600 bytes transferred in 9.370 secs (11190779 bytes/sec)
    0m9.54s real     0m0.00s user     0m1.00s system
# time dd if=/dev/zero of=/mnt/extSdCard/testfile bs=104857600 count=1
1+0 records in
1+0 records out
104857600 bytes transferred in 17.478 secs (5999404 bytes/sec)
    0m17.83s real     0m0.00s user     0m1.38s system
# time dd if=/dev/zero of=/mnt/extSdCard/testfile bs=104857600 count=1
1+0 records in
1+0 records out
104857600 bytes transferred in 11.267 secs (9306612 bytes/sec)
    0m11.73s real     0m0.01s user     0m1.45s system
# time dd if=/dev/zero of=/mnt/extSdCard/testfile bs=104857600 count=1
1+0 records in
1+0 records out
104857600 bytes transferred in 12.553 secs (8353190 bytes/sec)
    0m12.85s real     0m0.00s user     0m1.54s system

This times the creation of a 100MB file, three times in a row. The MicroSD card is a 32GB SanDisk Ultra MicroSDHC UHS-I card, which is rated at up to 30MB/s read speed.
Now clearly I don't get anywhere near that, but writes are always slower. My actual write speed is between 5.72 and 8.87MB/s in the above test, while the performance of the internal flash memory was between 9.71 and 10.95MB/s.

SanDisk has faster memory, the "Extreme Pro", which is rated up to 95MB/s read and 90MB/s write (and only available up to 16GB in capacity). But looking at the performance numbers I suspect that this will not perform better as I think the bottleneck is the phone itself, and that it does not support the faster UHS speed classes and is limited to Class 10.

---------- Post added at 04:40 PM ---------- Previous post was at 04:25 PM ----------

And if anyone was wondering about read speeds of the same 100MB file

Internal memory

Code:

# time dd if=/mnt/sdcard/testfile of=/dev/null              
204800+0 records in
204800+0 records out
104857600 bytes transferred in 3.278 secs (31988285 bytes/sec)
    0m3.35s real     0m0.20s user     0m1.05s system
# time dd if=/mnt/sdcard/testfile of=/dev/null              
204800+0 records in
204800+0 records out
104857600 bytes transferred in 2.341 secs (44791798 bytes/sec)
    0m2.45s real     0m0.30s user     0m0.92s system
# time dd if=/mnt/sdcard/testfile of=/dev/null              
204800+0 records in
204800+0 records out
104857600 bytes transferred in 2.249 secs (46624099 bytes/sec)
    0m2.34s real     0m0.14s user     0m1.04s system

So here I'm getting a read speed of between 30.5 and 44.46MB/s

32GB SanDisk Ultra MicroSDHC UHF-I

Code:

# time dd if=/mnt/extSdCard/testfile of=/dev/null     
204800+0 records in
204800+0 records out
104857600 bytes transferred in 1.005 secs (104335920 bytes/sec)
    0m1.03s real     0m0.15s user     0m0.85s system
# time dd if=/mnt/extSdCard/testfile of=/dev/null           
204800+0 records in
204800+0 records out
104857600 bytes transferred in 0.996 secs (105278714 bytes/sec)
    0m1.01s real     0m0.18s user     0m0.81s system
# time dd if=/mnt/extSdCard/testfile of=/dev/null           
204800+0 records in
204800+0 records out
104857600 bytes transferred in 1.004 secs (104439840 bytes/sec)
    0m1.01s real     0m0.16s user     0m0.84s system

These numbers are incredibly quick, between 99.5 and 100.4MB/s. Which either means that the operation is being cached in memory, or the phone does support UHS-I.

andre.silva.92 · Oct 8, 2012

Recovery mode with out CWM

VOL UP + VOL DOWN + HOME + POWER

voom · Oct 8, 2012

If anyone using the above root has tried Chainfires triangle-away-app to reset flashcounter I'd be curious to hear if it works. I would suspect trying this is rather risky at the moment?

robert__ · Oct 8, 2012

voom said:
If anyone using the above root has tried Chainfires triangle-away-app to reset flashcounter I'd be curious to hear if it works. I would suspect trying this is rather risky at the moment?

Well, it specifically says not to try it on Qualcomm devices...

eclipse29 · Oct 8, 2012

Rooting is done ! Thank you very very much but what now what is the best call recorder ?

eclipse29 · Oct 8, 2012

eclipse29 said:
Rooting is done ! Thank you very very much but what now what is the best call recorder ?

CallRecorder (skvalex) is the best one after installing all the needed as alsa and busybox.

xpacguy · Oct 9, 2012

voom said:
If you select a contact number found and chosen via the dialer, you can choose directly by pressing either button as seen in the screenshot.

Whenever there is a call-option that does not involve the dialer, the preset SIM is used.

Since the notification-bar is available anywhere, opening it to select the desired SIM before actually starting the call is no problem. But that is like the other Android Duos', so you probably know that...

---------- Post added at 04:18 PM ---------- Previous post was at 04:08 PM ----------

I did not succeed to get into recovery with that key-combination. Once I managed to start download-mode but that is supposed to react to Volume-Down, Home & Power... However, with adb there was no problem booting into recovery easily so I did not investigate that any further as that is sufficent for me.

Rooting by invoking an update.zip from recovery (3e) did not work because the signature verification failed. Loading CWM first to toggle sig. check off - I have not found any solution either to do that. So you are probably right that we need a custom kernel like CF-Root. Who would be capable and willing to look into that? (I did PM chainfire about it but maybe there are other developers who would look into that...)

With the combination of Volume-Down, Home & Power it did not go to the recovery mode but it started in SAFE MODE...... any Idea

vikassaini01 · Oct 9, 2012

Already mentioned several times.

http://xdaforums.com/showpost.php?p=32543731&postcount=52

Use "Vol. UP + Vol. Down + Home + Power" 4 key combination for booting into recovery mode.

irshad506 · Oct 9, 2012

Warning sign (!)

Hi dears!
Thanks for guiding!
And finally i root my Mobile easy!

One thing i saw it is that when i reboot my phone when it reach Samsung logo in first so for few second it show warning sign then hide so it is happen for all which did root or just for me????(dear vikassaini01 please ans)!

One more question how we can use OTG in this mobile mean Flash memory, mean it is possible if yes please guide us???

tristone · Oct 9, 2012

Warning sign is normal reaction of Samsung phones to custom flashing.
There is a procedure how to remove it but only for devices based on Samsung Exinos chipsets. We have Qualcomm chipset based phone so you probably have to tolerate the sign.

robert__ · Oct 9, 2012

irshad506 said:
Hi dears!
Thanks for guiding!
And finally i root my Mobile easy!

One thing i saw it is that when i reboot my phone when it reach Samsung logo in first so for few second it show warning sign then hide so it is happen for all which did root or just for me????(dear vikassaini01 please ans)!

One more question how we can use OTG in this mobile mean Flash memory, mean it is possible if yes please guide us???

Irshad506,

When you install a custom bootloader (CWM) on a Samsung phone you will get the yellow triangle with the exclamation mark on boot. This is normal. It basically means that you are no longer covered by your Samsung warranty.

As to your second question, I'm afraid I don't quite understand what your asking.

[Q] Samsung Galaxy S duos s7562

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