Database Users

Unlocked, non-Tmobile G1 where to go from here

First - I've searched, searched and searched for my particular circumstances, so if this is the wrong place for my questions I apologize in advance. (I've seen all the warnings, in so many posts - honestly! It's kept me searching and not posting for weeks.)
I bought a G1 off eBay (no tmobile in my area); it wasn't unlocked so I bought an unlock code. So far, so good. But it took forever researching how to get my particular obscure carrier settings into the APN (Iowa Wireless) and I couldn't bypass and use wifi because it wouldn't reboot (no root workaround). So then, I flashed to the 29 rom. I had lots of problems with adb but finally found a Windows XP machine that it would work on and managed to get my phone working. I had to enter some command line intent commands (that I don't have here at work) but it's been a long complicated road. I'm not even sure I could duplicate any of it.
So now I have a G1 phone that can't get paid apps, which stinks (and yes, I installed the Market Enabler app). It isn't a developer phone. The details:
Firmware 1.0
Baseband version: 62.33.20.08H_1.22.12.29
Kernel: 2.6.25-01843-gfea26b0 [email protected] #6
Build Number: kila-user 1.0 TC4-RC29 115247 ota-rel-keys.release-keys
I desperately need ebook reading capability, so without paid apps I'm up a creek. The web browser won't even open local files that I can tell and when I click on an html file it opens in a viewer that never displays my files, which tend to have lots of javascript and css. And we won't even talk about chm files and pdb/prc compiled ebooks. Is there a rom that will get me access to the Market so I can buy a couple of readers?
When I got the G1, I was thinking that an HTC phone would be the successor to the hackable Motorola phones (I used to have an A780). But in a way, this forum is too much of a good thing. There are so many roms, bootloaders and some kind of radio thing that I'm kinda scared to mess with. So, that's my next question - is there some kind of table where I can see comparisons on which roms do what and what files go together? I'm piecing things from posts and I keep getting lost.
And for my next question - if I do get up enough nerve to get install a non-standard rom, will my unlock code still work if everything gets wiped?
Lastly, and I know this is sensitive because it is an Android community - I found a few tantalizing posts while researching all my issues that hinted that maybe someone might be working on a non-Android solution. I don't know if was OpenMoko or something like that but seriously, I would jump at the opportunity to have an accessible Linux system.
As awesome as the G1 is (and the bar code thing was my killer app) it's a lot of hassle for a working mother and grandmother. I have 7 and 9 year old kids to hang out with instead of muttering "Frak this" after the tenth or twentieth rewording of the google search terms.
Thanks for letting me get this out of my system. I'm reading deprived and starting to reevaluate my old Shadow sitting on the shelf.
Terry in Iowa

Being the nice guy I am, this is a database listed under the Developer's section under INFORMATIVE THREADS (lots of goodies under there): http://www.simonwalkerphotos.com/android/android_build_information.asp
it lists the features of each ROM in the forums all neatly organized. =)
For your other question: the unlock code works perfectly fine after several wipes, its permanent. I unlocked my phone (from T-Mobile) and have gone through at least 8 ROMs and the unlock still works. With these new ROMs, you get developer capabilities and should be able to download that reader you're after.
Just take your time and don't rush things and you'll be fine. A piece of cake really.

Thanks. Your link is exactly what I needed. I know I missed it, whether it's because it's 11th on the list and my eyes were so glazed over, or I was hung up on getting root (the main thread for root on that page didn't work for me - the mount commands) or that I kinda expected it to be down in the actual ROM section.
I know this isn't about the ROM list but it's so frustrating to have threads marked but not work, and the solutions are often way down in the comment thread. That makes it so hard to get anywhere. I hope I don't sound too ungrateful, especially since I wanted the G1 because of the community support. It's just been way more work than I expected from previous experiences with other phones and pdas.
Well, I looked through the spreadsheet and I think I'm going to try out CyanogenMod v3.4.6 (Stable). Now I just need to set aside some time to gather everything together. (I'm learning...)
Thanks again,
Terry

No worries, we all gotta start somewhere. Once you have root, its pretty much just a straight ROM flash from there, depending on whether the ROM you've chosen needs the new Haykuro SPL or just HardSPL. With Haykuro SPL, there's really only 2 extra steps and you can just straight flash ROMs from there. Just be careful if you're flashing the Haykuro SPL because if you do it incorrectly, you'll brick you're phone. But don't be too scared, if you did everything correctly, there shouldn't be any reason why it won't work.

I had no trouble with the HardSPL, the radio update, the pimped out recovery image but the actual CyanogenMod almost gave me a heart attack. I applied the update.zip and rebooted, and it hung on a cool animated android screen (after the G1 splash). I took the battery out, wiped the phone (which I forgot to do the first time) and tried it again. Same results. I took the battery out again and applied the update.zip and the 3rd time it actually booted.
My previously installed programs were still there, so I'm not quite sure what happened but I'm not going to question it any further. ;-)
Thanks again for the little bit of hand holding.
Terry (proud owner of 8 paid apps and still looking...)

Good luck. If you use Apps2SD, after you re-apps2sd after a flash/wipe, it will take a very long time to boot and you might think that it has frozen, but in reality, its just loading all the apps over again so it could take up to 10min. But glad you got it working regardless. Have fun.

[Q] SAMSUNG = Nightmare

Before anybody starts to bash me for NOT SEARCHING, Well, I did, I have been doing nothing in the past 3 days except for SEARCHING, here at XDA, and over our friend Google.
Simple things in life that I DON"T KNOW "WHY" I can't do: Its all regarding my Galaxy Tab:
1. SYNC Application that REALLY WORKS ?????
Cannot find Literally ANY that could connect to my Tab, Tried Kies 1.5.3 & 2.0 , (YOUR PHONE IS NOT SUPPORTED)
Tried SAMSUNG New PC STUDIO - TOTAL Failure!
2. No Descent BACKUP APPLICATION? OMG
I remember very well that my HTC Touch HD / HD2 came with a Full version of Sprite Backup, Nothing for Samsung? Do I have to fiddle around trying 30+ to backup (ALL PROGRAMS & DATA)?????????
3. WHERE THE HELL IS THE OFFICIAL WEBSITE THAT HAS FIRMWARE UPGRADES AND DOWNLOADS?
Its not a NOKIA you know, It's a Tablet that is using a NOT-Fully-Optimized-For-Tablets Froyo version. and its an OPEN SOURCE for God's sake, OPEN HOW???
Lots of official Fixes should be easily accessible, along with ROM and RADIO Upgrades, Just like what I'm used to with HTC Devices since 8 years
Where is SAMSUNG SUPPORT???????????????????????????
I just have the Silly User Guide and that's about it, what the hell have they been thinking????????????
have they dumped the device, and became fully DEPENDABLE on XDA-Dev?
4. After Restoring Factory settings, I install very limitted amount of Appz, all legal and free, then restore my Contacts using one application, then Restore my SMS using another Application, then restore my Bookmarks with a third application (Damn it) I then lose the ringtone.
It simply does not RING nor VIBRATE when someone calls me.
Please don't tell me to TRY Titanium Backup!!!!!!!!!!
Do I have to go through an infinite list of CRAP, in COLORS, to BACKUP my DATA????????????????????????????????
I'm Terribly sorry to come RANT in here, its my only WAY to Exhaust my ANGER
What astonishes me here at XDA too, that there is no section for Guides, Tips, just some FM versions, and lots of talk about UNLOCKING the SGT, am I blind to that extent?
*#1234# =
PDA: P1000JPJJ2
PHONE: P1000JXJJ1
CSC: P1000OJPJJ3
Anyone else?
Will

I know that the uprades as far as firmaware should come from your provider just as it does with your phone. Just like with the HD2, they release a firmware update to the providers, then the providers release it after they tweak it.
What seems to be wrong with the firmware that is on the tab? I have had my tab a few month and have had ZERO issues with it. I rooted it, and thats all I needed.
As far as syncing your data, you dont want to use titanium backup that does everything, so I am not sure what your asking for.

Dear Willy
If you want real help, please, tell us what is your vision of ideal backup and sync.
I don't see you using Google for that.
I have switched from iPhone in part because I didn't want iTunes and computer every time I wanted to reload data. With Google I am in sync with my online data after logging on Gmail.
It is possible that it does not work as well outside the US but for that purpose Samsung provides Kies software for Windows. Check this link: http://www.samsung.com/uk/support/main/supportMain.do
I did not use it because don't see useful for me but it is exactly a replacement for online sync and backup.
Hope this will help

Thank you dubie76, Now I have some understandings
Thank you too Adapt0r, you are totally correct regarding iTunes and their Lock-Down policy, let alone the very tight platform.
But Still, TB is Okay, but #1 its a PAID App, #2 its really complicated to go through lots of options in various color-codes to get the job done.
I was thinking that there would be an Application that has (Backup/Restore) 2 buttons to do what you need, as simple as that.
and although the SGT is being released in the US to carrier, they also release it in some other countries w/o a Carrier nor a Contract, in such case, SAMSUNG should be providing the Support for it, no body else.
Regarding PC Sync, I just need it to upgrade my FW (the official way) w/o hacks and boot-loader modes, I did some studies regarding my current FW, and its 3 month old, I demand an upgrade to make my usage easier, not to mention the bug fixes.
Every first-release FW/ROM has its flaws, that it get sorted out through UPDATES, got my point?
one more time I would like to thank you for the positive and friendly attitude, I really appreciate that

Willy318is said:
Thank you dubie76, Now I have some understandings
Thank you too Adapt0r, you are totally correct regarding iTunes and their Lock-Down policy, let alone the very tight platform.
But Still, TB is Okay, but #1 its a PAID App, #2 its really complicated to go through lots of options in various color-codes to get the job done.
I was thinking that there would be an Application that has (Backup/Restore) 2 buttons to do what you need, as simple as that.
and although the SGT is being released in the US to carrier, they also release it in some other countries w/o a Carrier nor a Contract, in such case, SAMSUNG should be providing the Support for it, no body else.
Regarding PC Sync, I just need it to upgrade my FW (the official way) w/o hacks and boot-loader modes, I did some studies regarding my current FW, and its 3 month old, I demand an upgrade to make my usage easier, not to mention the bug fixes.
Every first-release FW/ROM has its flaws, that it get sorted out through UPDATES, got my point?
one more time I would like to thank you for the positive and friendly attitude, I really appreciate that
Click to expand...
Click to collapse
TB will backup and restore everything with one click. Its the batch operation. Yes the pro version is paid. If you really want it, I can PM it to you, but you have blocked PMs. I have been messing with hybrid roms and builds for a long time and I recommend you dont mess with tablet roms yet.

In your list of complains you can add: the worst support for Microsoft Exchange ever seen
The Tab Software is a joke... I can't believe I have read in several articles it was much better than many other Android devices. I don't want to know how bad others are....

@dubie76:
PM is now Okay, I guess it has been jacked up after upgrading the Forum.
thx dear

Willy318is said:
@dubie76:
PM is now Okay, I guess it has been jacked up after upgrading the Forum.
thx dear
Click to expand...
Click to collapse
PM sent.
10char

What do you want to backup exactly? (Other than Descent which doesn't have an Android port that I'm aware of).
Kies should work fine, if it's not working then you may have the SGT in debug mode or something.
Kies _is_ the "official website" for firmware updates.
I've never owned a phone that will backup _everything_ for later restoration after a factory reset in an easy fashion. An iPhone does a reasonable job of it I guess.

@dubie76:
Words of Thanking can't do you justice, Truely appreciate it.
KIES, for Some reason won't connect to my SGT, and BTW, if USB Debugging mode is enabled, you will get a prompt on the tab saying that you have to Disable it if you want to connect your SGT to your PC.
The weird thing is, some plp. say that we should choose UPGRADE, from the list that pops up when connecting the SGT to a PC/Notebook. Well, I only have KIES / MASS STORAGE / MEDIA PLAYER.
Last question:
If I bought my SGT from KUWAIT (Middle East), do I have to use a KIES version that is Downloaded off Kuwait region (through SAMSUNG Website)? if so, then that's absurd, if Not, then what should I do?
KIES will be used only to UPGRADE the FW, not for backup or Appz installations or anything else.
thx again for all the help, its so comforting to Ask and be Answered, I Love you XDA People.
Will

I have the same predicament. After installing the Kies, it went well then suddenly it froze. I reinstalled it and updated the driver, still cannot sync. The apps just stayed in "connecting" mode and cannot seem to recognize the gtb. I'm hoping for another alternative. It seems this Kies thing is a waste of my time.

The Samsung website specifically says that Kies will not work in certain territories.
Google search for samsung galaxy tab FAQs and you will find a link that contains all sorts of responses from Samsung, official ones, regarding the issues people seem to be having on this thread.
Sent from my SGH-T849 using XDA Premium App

[Q] Corporate Android Usage

Hello Guys,
before I start: My apologies for this, I am not quite sure if I am even in the right Topic.
I think of myself as pretty new to Android, but got some experiences in Rooting, Custom Roms and such. But that is already as far as it gets.
Now my Problem: We lost our BES and now my Company decided to go with Android (SG4 I9505) and I have to make it happen :angel:.
1. I Need some Kind of Freeware tool to administer Android Devices (Basic: find device, delete data, restrict Apps)
2. If something like this dont exist (which I dont think-I just havent found it)), I would Need to know if I can use CM 10.2 as our Standard Rom and before you start rolling your eyes with experimental and such....
I have to restrict the phone solely to Telefone, Exchange and some preselected (mostly travel)Tools. NO GAPPS!!! and I think that nightly CM provides this with no problems
To realize this I downloaded the nightly from 18th, I think. I then added some APK´s into \System\app Folder and installed the ROM. This actually worked fine until I updated to phone afterwards via build in updating tool - all Tools were gone.(what did I miss?)
Now, our Standard is SG4 I-9505.
Any ideas on how I could do this? (I couldnt find what I was looking for)
1. Adminster a fleet of androids (free)
2. Customize a Custom ROM for corporate Identity (How to pre-setup Exchange Boot Logo, Lockscreen, etc.)
3. or customize a ROM to the Point it cannot do much except what is in the \System\app Folder and turn off updates
Any link is much appreciated. Sadly there is sooooo much andoid articles out there that I seem to get lost while searching for the right one. Thanks in advance!!!!

AccEss-dEniEd said:
1. Adminster a fleet of androids (free)
2. Customize a Custom ROM for corporate Identity (How to pre-setup Exchange Boot Logo, Lockscreen, etc.)
3. or customize a ROM to the Point it cannot do much except what is in the \System\app Folder and turn off updates
Click to expand...
Click to collapse
My guess is I'll get flamed for saying this - but here goes.
Android corporate (MDM) leaves a lot to be desired next to iOS, at least as far as I've been able to find. We manage a lot of iPads and obviously minus the custom ROM we've been able to do it all for little to no cost. We've shied away from Android a lot because of the limited MDM control.
But, since you asked:
1. Meraki Systems Manager (and the accompanying app from Google Play)
2. Good luck with that
3. See number 2
I think the reality is you're going to need to do something to the effect of either cook your own ROM and deploy it or use a tool like CWM to create an "image" that you would then restore to the devices. I did that with a batch of 60+ Nexus 7s and it worked out pretty well.
Edit:
With all that said - I would urge your management to reconsider their approach as the world has changed since Blackberry was the only game in town. Yes, still stick with MDM, device location, remote wipe etc. But unless you're dealing with highly sensitive information (exp banking), let people actually USE the device you're giving them. Don't lock it down to where its basically a first generation iPhone. I'm a big fan of giving someone a good tool and letting them use it the way that works best for them, while still keeping the device and more importantly the data under corporate control.

Assuming you have Exchange, does this not provide the management part?
AccEss-dEniEd said:
Hello Guys,
before I start: My apologies for this, I am not quite sure if I am even in the right Topic.
I think of myself as pretty new to Android, but got some experiences in Rooting, Custom Roms and such. But that is already as far as it gets.
Now my Problem: We lost our BES and now my Company decided to go with Android (SG4 I9505) and I have to make it happen :angel:.
1. I Need some Kind of Freeware tool to administer Android Devices (Basic: find device, delete data, restrict Apps)
2. If something like this dont exist (which I dont think-I just havent found it)), I would Need to know if I can use CM 10.2 as our Standard Rom and before you start rolling your eyes with experimental and such....
I have to restrict the phone solely to Telefone, Exchange and some preselected (mostly travel)Tools. NO GAPPS!!! and I think that nightly CM provides this with no problems
To realize this I downloaded the nightly from 18th, I think. I then added some APK´s into \System\app Folder and installed the ROM. This actually worked fine until I updated to phone afterwards via build in updating tool - all Tools were gone.(what did I miss?)
Now, our Standard is SG4 I-9505.
Any ideas on how I could do this? (I couldnt find what I was looking for)
1. Adminster a fleet of androids (free)
2. Customize a Custom ROM for corporate Identity (How to pre-setup Exchange Boot Logo, Lockscreen, etc.)
3. or customize a ROM to the Point it cannot do much except what is in the \System\app Folder and turn off updates
Any link is much appreciated. Sadly there is sooooo much andoid articles out there that I seem to get lost while searching for the right one. Thanks in advance!!!!
Click to expand...
Click to collapse

I currently work in the infrastructure of a good sized corporation. We're using IOS with a mixture of android hardware and there's some good news and bad news for what you want to do.
Good news is, like Jpcurrie said, exchange will handle remote wiping and locking the phone down. you can require the phone to use a PIN, remote wipe and and a bit more. As for locating the phone, Google actually has finally built in remote locating of your device and remote wipe as well. There's a couple good apps out there (lookout) will turn on your GPS and allow you to locate the phone and they're free. If you happen to have a virtualized environment with VMware, you could also use VMware View Horizons which builds in a secure sector on the phone and you can remotely manage which apps and files the user can use. the best part of View is you can use a BYOD model and keep corporate data secure. The biggest issue is if you don't happen to already use a VMware architecture it gets pricey quickly.
Here's the rub now. you want to install your own logos on the bootup which you could do by installing a custom ROM. This will void your warranty on the hardware and as it isn't 100% stable you'll be spending a LOT of time trying to keep a consistent environment.
Like netsyd said, talk to management about an MDM, and the branding of the devices, maybe even talk to them about using a BYOD to reduce costs of hardware and administration of that hardware.

Isn´t Knox supposed to allow administrators to only delete the data that belongs to the Corporate account (emails, calendars, tasks, etc.), or an administrator can still force a full device wipe? Sorry if the questions is too basic, I've tried searching around for info on Knox but couldn't find anything besides press releases.
I'm not a network administrator, I'm just a user and my school secure wifi installs a device administrator.
I'm sorry to deviate the topic a little bit from the original.

At Delta we use Air Watch but it's far from free. You can however manage devices and remote wipe. You can also view installed apps and remove what should not be there. Options for device profiles also. I help maintain these devices everyday. Not Free but an MDM is your best bet.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

long time - no see
Hiya,
sorry I didn t answer - kinda was overwhelmed with this Task.
Wanted still to thank you: I did what you suggestet and wanted to let you know where I am now.
1. Meraki = implemented - now runnning 160+ devices. (at no costs)
2. CM12.1 implemented (without GAPPS/no SU)
3. Standard Image/w Apps defined. (Mostly Offline capable Tools like "here" etc.(which actually reduced costs))
4. Since Android has limited capability to be administered in a "real" professional Fashion we mitigated this issue by creating a policy to forbid the user to temper with the device (e.g. Installation of Software/SU etc) yet to allow the Installation of Software manually by us via creating a ticket. We check the Software mainly for "sanity" and malware and install it if ok.
This has been working so far like a charm for us. None of the user were happy to loose the Gapps obviously - but once they had their Software and settled in, all was ok. For the Administering part: Meraki can tell me if Software is beeing installed without our Knowledge, also we see if SM doesnt speak with us anymore. So, for now, we got the most out of the System and I am happy to say: I got minimal Control in a Quality sense. No no more "KO Critera" - and we have implemented Android. Tracking etc. is forbidden in Germany anyway - so we use Meraki mainly to wipe if lost and to check if someone goes against policy.
What is still open:
- I am still working on a way to have the user enter his credentials and automatically enter These in all respective config files. (haven't had much luck - with the absense of SU obviously.
- a Little cosmetics still open (I am still trying to figure out how the theming really works ... I usually f**k up the Pictures and sounds.... but so far making Progress
- with less and less good Android devices coming out (now, I am probably beeing flamed now ) that suits our needs (open bootloader, known/supported CPUs, removable battery, SD Card Slot) - I think we might Switch by Q4/2016.
netsyd said:
My guess is I'll get flamed for saying this - but here goes.
Android corporate (MDM) leaves a lot to be desired next to iOS, at least as far as I've been able to find. We manage a lot of iPads and obviously minus the custom ROM we've been able to do it all for little to no cost. We've shied away from Android a lot because of the limited MDM control.
But, since you asked:
1. Meraki Systems Manager (and the accompanying app from Google Play)
2. Good luck with that
3. See number 2
I think the reality is you're going to need to do something to the effect of either cook your own ROM and deploy it or use a tool like CWM to create an "image" that you would then restore to the devices. I did that with a batch of 60+ Nexus 7s and it worked out pretty well.
Edit:
With all that said - I would urge your management to reconsider their approach as the world has changed since Blackberry was the only game in town. Yes, still stick with MDM, device location, remote wipe etc. But unless you're dealing with highly sensitive information (exp banking), let people actually USE the device you're giving them. Don't lock it down to where its basically a first generation iPhone. I'm a big fan of giving someone a good tool and letting them use it the way that works best for them, while still keeping the device and more importantly the data under corporate control.
Click to expand...
Click to collapse

[Q]App not allowing me to sign in due to custom rom

First of all, forgive me if this is not the right forum to ask this question, because I'm not sure what is.
Hi everyone,
So the company that provides the TV channels in my country (like the cable companies in the US) has a streaming service that streams most of these channels online to phones, tablets, computers.
The problem is that their app is, according to them "not supported on hacked devices". Just so we're clear, we're talking about Android here, and hacked = root/custom rom, which this stupid company considers illegal. In some devices, they check both root and custom rom, in some only one of them, and in some the app will work even if you have both. For example, on my Nexus 4 the app worked with stock rom that was rooted. Now that I am running a custom rom, trying to hide root using various apps does not work. So obviously the problem, with my device at least, is running the custom rom.
I'm currently learning Java & Android development and have decided to use the little knowledge that I have to try to find the lines of code responsible for this idiotic check.
I looked up many tools for decompiling apps and have finally found a good one, called JadX.
http://androidcracking.blogspot.co.i...ler.html#links
This decompiler is excellent, but gives me a scary amount of code files to look. Even so, trying to search all of them (JadX has that functionality) for the code that checks for root/custom rom has turned up nothing. I have also tried to search for the message they give me when I open the app (about hacked devices not working) but I found nothing, again.
One more thing - a developer that also tried to solve this problem said he traced the problem back to DxDrmDlcCore. I searched it, found it a some class, but not sure what to do now (delete the entire class and recompile?)
Can someone here direct me towards what I need to be looking for?
OR
Is the solution really simple, such as editing my build.prop? Someone suggested it once, but did not know what lines to edit.
If someone is ready to step up to the challenge, I can upload the apk.
Thank you!

Presentation, and question of a newcomer - signal and GT-S6102 ?

Hello everyone,
I'm pretty new to this forum, I've been following some discussions and threads for about 3 to 4 weeks now, I wrote a mail to members privately, and this is now my first forum posting, opening a thread.
My mobile phone is of course a Samsung Galaxy Y Duos aka GT-S6102, which I have had for about three and a half years now and I'm pretty satisfied with the phone I must say.
I am not really a programmer (oh well, I played around with Pascal a few decades ago!), neither am I a developer – and I admire all the more the work done by some of you here –, and I been using Linux for over 10 years now and I know my ways around this operating system.
So when I got my first smartphone I quickly realised that there had to be a way for me to free my phone.
And with the beginning of the new year, I began to take action! Inspired by all extremely useful information I read on this site, I was able to
- root my phone,
- work with CWM (temporary version ), among other things make a nandroid backup,
- install a new kernel (iDuos),
- free space on the internal storage on my phone (thanks to Link2SD), etc...
And much of the software, the methods, the information, came from the pages of this site – so thanks again to all of the contributors!
But the reason that makes me post this message today is the frustration that I have, due to the fact that I was absolutely unable to install an application that I was very eager to test and use : Signal private messenger.
No matter what I tried, the app (3.9 and now 3.10) would not get installed on my phone!
I tried with Wi-Fi, with the data service of my phone service carrier, I tried with a second cellphone which is just the same as mine, I tried using Hideman VPN service, I even tried a version of Signal that did not come from the play store (of course I did not forget to tick "allow third-party applications") – all with no success!
I even got in touch with Open Whisper System (the only thing I haven't done so far is get in touch with Google) and exchanged several mails with Masha (well, perhaps my ability to communicate is not the best), but I did not get any answer to my last question – which is the reason why I am asking the same question to the readers of this thread (and users of Samsung Galaxy Y Duos aka GT-S6102) :
do you know if Open Whisper System's Signal Private Messenger is supposed to work with our cellular telephone?
Do you have it on your phones? Did you have trouble installing it?
Anyway thanks a lot for your answers! And if there is anything else you need to know about the configuration of my phone, please let me know.
ludo