Possible ? - Android Q&A, Help & Troubleshooting

Hi all
I am newish to the Android world but have been a programer in the embeded C world and before I start trying to resolve my issue I would like to know if I am just barking up the wrong tree.
I have been trying to replace a very old HP Ipaq 5700 that I use only for GPS purposes with something more modern and a larger screen for some time but although I got close it was not good enough as a replacement, the program I use is Memory map and their version for the Android platform was awful. I purchased a Ruggex Rhino two device that runs Lolipop 5.1 and got to the point where it would run the Memory map software and display the GPS data being sent from my Ublox GNSS receiver via bluetooth and it gave current location, but it was not good enough to use in the field. Memory map have now updated their program so it runs on Android, Windows and Linux and it is a much better user interface but requires Android 6 or later.
So having read about custom ROM's and getting Android updated is it possible to do this to any Android device such as my device bearing in mind it will only be used to receive a Bluetooth signal and run basic apps, no intention of fitting a sim as I need really good battery life.
If this is possible could someone please point me in the right direction, the device already has it's boatloader unlocked.
Thanks Roy

Spectric2 said:
Hi all
I am newish to the Android world but have been a programer in the embeded C world and before I start trying to resolve my issue I would like to know if I am just barking up the wrong tree.
I have been trying to replace a very old HP Ipaq 5700 that I use only for GPS purposes with something more modern and a larger screen for some time but although I got close it was not good enough as a replacement, the program I use is Memory map and their version for the Android platform was awful. I purchased a Ruggex Rhino two device that runs Lolipop 5.1 and got to the point where it would run the Memory map software and display the GPS data being sent from my Ublox GNSS receiver via bluetooth and it gave current location, but it was not good enough to use in the field. Memory map have now updated their program so it runs on Android, Windows and Linux and it is a much better user interface but requires Android 6 or later.
So having read about custom ROM's and getting Android updated is it possible to do this to any Android device such as my device bearing in mind it will only be used to receive a Bluetooth signal and run basic apps, no intention of fitting a sim as I need really good battery life.
If this is possible could someone please point me in the right direction, the device already has it's boatloader unlocked.
Thanks Roy
Click to expand...
Click to collapse
Hello and good afternoon, @Spectric2
Welcome to XDA. I hope you'll always find and get the support you require.
However, prior to your next posting please read the guidances that are stuck on top of every forum like
Note: Questions go in Q&A Forum
If you are posting a Question Thread post it in the Q&A forum. Technical discussion of Android development and hacking. No noobs, please. Device-specific releases should go under the appropriate device forum...
forum.xda-developers.com
and the others. I've moved the thread to Android Q&A.
Regards
Oswald Boelcke
Senior Moderator

Thanks Oswald
Roy

@Spectric2 No problem, Roy. It's good to have you onboard.
I just saw your post by accident. As I don't know how familiar you are with XDA, if you like to make somebody aware of your post you'd have to either mention that member or to reply to his post (what we also call to quote the member). I did both in my post above.
@sd_shadow explained it very nicely in his guide here:
[Index] XDA 2021: How to Navigate the New Site Layout
XDA 2021 [INDEX] Helpful Information Welcome, this thread has been created to encompass everything you may need to navigate the new site layout. Please only post in this thread with feedback on how to improve this document. Do not post "Thank...
forum.xda-developers.com
Regards
Oswald Boelcke

Related

Best manufacturer for building custom ROM

Hi guys,
I'm an experienced Android developer which also have started playing with Android ROM customization. However, I've limited experience regarding manufacturers and HW providers, so I hope you can point me in the right direction. I plan developing a very simple custom Android ROM to be installed in single-purpose devices owned by my company. The ROM will only be installed in those devices, and will not be offered to the public. We don't have any particular requirement for the device other than having a decent camera and at least 2GB of RAM.
With all that in mind, our top priority is finding a manufacturer which is open to ROM customization and provides official and stable drivers, kernel images and DTs, so we can work on the development of the ROM with best guarantees. Ideally, devices would be the cheaper the better (<150$). Any suggestion on where to start searching?
Regards,
pitazzo
pitazzo said:
Hi guys,
I'm an experienced Android developer which also have started playing with Android ROM customization. However, I've limited experience regarding manufacturers and HW providers, so I hope you can point me in the right direction. I plan developing a very simple custom Android ROM to be installed in single-purpose devices owned by my company. The ROM will only be installed in those devices, and will not be offered to the public. We don't have any particular requirement for the device other than having a decent camera and at least 2GB of RAM.
With all that in mind, our top priority is finding a manufacturer which is open to ROM customization and provides official and stable drivers, kernel images and DTs, so we can work on the development of the ROM with best guarantees. Ideally, devices would be the cheaper the better. Any suggestion on where to start searching?
Regards,
pitazzo
Click to expand...
Click to collapse
@pitazzo
Welcome to XDA. I hope you'll always get the support you require.
However, prior to your next posting please read the guidances that are stuck on top of every forum like
Note: Questions go in Q&A Forum
If you are posting a Question Thread post it in the Q&A forum. Technical discussion of Android development and hacking. No noobs, please. Device-specific releases should go under the appropriate device forum...
forum.xda-developers.com
and the others. I've moved the thread to Android Q&A.
Thanks for your cooperation.
Regards
Oswald Boelcke
Senior Moderator
Open Source at Fairphone — FAIRPHONE open source documentation
code.fairphone.com
aIecxs said:
Open Source at Fairphone — FAIRPHONE open source documentation
code.fairphone.com
Click to expand...
Click to collapse
Thanks for the suggestion alecxs, Fairphone is indeed a good option. However, it is out of our budget. Ideally, the model we are looking for should be below 150$
pitazzo said:
Thanks for the suggestion alecxs, Fairphone is indeed a good option. However, it out of our budget. Ideally, the model we are looking for should be below 150$
Click to expand...
Click to collapse
Maybe these threads are the best place to discuss this or to get advice?
**What phone should I buy next?** -- Not sure what device to buy? Ask here!
Hi everyone, This thread is a continuation of this thread. This is here so you can discuss what your next phone/tablet should be, if you're not sure what to pick. Also, if you need advice as to which device is better than another, then feel...
forum.xda-developers.com
[Discussion] What's your next smartphone / What should I buy
mines is either galaxy s3 or galaxy note for t-mobile Sent from my SGH-T989 using XDA Premium App
forum.xda-developers.com
Just let me know if you like to get your posts moved into one of them.
Regards
Oswald Boelcke
Senior Moderator
check list of supported devices. official supported by TWRP or LineageOS means requirements satisfied.
https://twrp.me/Devices
https://wiki.lineageos.org/devices

Where to post an offer for making a BLE Android app?

I hope this is the right forum.
Been lurking for a long time. Next month I will need an app for my Casio BLE watch (not a smartwatch).
The app would require investigation on communication since I have no documentation.
I know it's possible because there already exist a few app that do that, however for different Casio model.
Where would you post such an offer?
I've tried fiverr, to no avail.
drunkenHiker said:
I hope this is the right forum.
Been lurking for a long time. Next month I will need an app for my Casio BLE watch (not a smartwatch).
The app would require investigation on communication since I have no documentation.
I know it's possible because there already exist a few app that do that, however for different Casio model.
Where would you post such an offer?
I've tried fiverr, to no avail.
Click to expand...
Click to collapse
Hello and good afternoon, @drunkenHiker
Welcome to XDA. I hope you'll always find and get the solution you require.
However, prior to your next posting please read the guidances that are stuck on top of every forum like
Note: Questions go in Q&A Forum
If you are posting a Question Thread post it in the Q&A forum. Technical discussion of Android development and hacking. No noobs, please. Device-specific releases should go under the appropriate device forum...
forum.xda-developers.com
and the others. I've moved the thread to Android Q&A.
Thanks for your cooperation!
Regards
Oswald Boelcke
Senior Moderator
I never heard of them, but those watches seem pricey to me (and I hate wearing a watch).
Since you're talking about a specific model the developer would need one.
Now, if you had a case of these watches and you could trust somebody, then I'd say offering a watch to somebody to develop an app for it could work.
Still, to make a fancy app to your spec is a ton more work than knocking off some quick-and-dirty watch link.
Bluetooth can usually be pretty easy to reverse engineer, especially if you have a similar Android app to disassemble.

Multi-user user switching

Hi guys.
The background: I bought a new tablet that removed the multi-user android feature () or, to better say, the feature is *hidden*.
The foreground: I'm able to recall the right screen calling the right activity and I'm able to create X users like expected.
Obviously the feature is removed (hidden) so also the user switcher icon is removed too.
Here come the development idea.
Build something quick tile? App with permanent notification? Actually no idea, but before thinking about the form, I need the base. How to switch user.
First of all: think you possibile to recall the user switch by call an intent/activity (I talk about the real switch, not the multi-user feature, that need to unlock the screen) maybe passing a static user value/ID?
Without intent/activity, how to achieve the result? I've experience in coding but totally new to android development, I never wrote a single line of code for our green robot.
I wouldn't but...
Redirect Notice
www.google.com
Google search: "android multi user,xda"
Or such.
extreme79 said:
Hi guys.
The background: I bought a new tablet that removed the multi-user android feature () or, to better say, the feature is *hidden*.
The foreground: I'm able to recall the right screen calling the right activity and I'm able to create X users like expected.
Obviously the feature is removed (hidden) so also the user switcher icon is removed too.
Here come the development idea.
Build something quick tile? App with permanent notification? Actually no idea, but before thinking about the form, I need the base. How to switch user.
First of all: think you possibile to recall the user switch by call an intent/activity (I talk about the real switch, not the multi-user feature, that need to unlock the screen) maybe passing a static user value/ID?
Without intent/activity, how to achieve the result? I've experience in coding but totally new to android development, I never wrote a single line of code for our green robot.
Click to expand...
Click to collapse
Hello and good afternoon, @extreme79
Prior to your next posting please read the guidances that are stuck on top of every forum like
Note: Questions go in Q&A Forum
If you are posting a Question Thread post it in the Q&A forum. Technical discussion of Android development and hacking. No noobs, please. Device-specific releases should go under the appropriate device forum...
forum.xda-developers.com
and the others. I've moved the thread to Android Q&A.
Thanks for your cooperation!
Regards
Oswald Boelcke
Senior Moderator
@Oswald Boelcke I wrote on dev forum after reading what you linked.. because I think it's a developing thing.. I'm talking about a solution to reach what I described by coding.. Not really a ckassic end-user question.
This involve coding skills, android developing skills, but obviously before I need to know if this can be done by a programmatically point of view.
Anyway.. If you think my post is better placed in Q&A, it's ok, it's just to explain.
blackhawk said:
I wouldn't but...
Redirect Notice
www.google.com
Google search: "android multi user,xda"
Or such.
Click to expand...
Click to collapse
I just done that, but what I found don't clarified so much my ideas.
What I found point me in a direction but it's not all clear to me.
Probably due to no experience of android developing.
extreme79 said:
I just done that, but what I found don't clarified so much my ideas.
What I found point me in a direction but it's not all clear to me.
Probably due to no experience of android developing.
Click to expand...
Click to collapse
It's doable but it complicates setup. I try to keep things as simple as usability allows... the KISS principal. Even in Windows I never used this feature... security be damned
Look around as there are other write ups on it that I've seen in the past. It's a lesser known feature of Android. Samsung may be a easier platform to do it with. Would setting up a Work account with Knox do it? I don't know... also search the Samsung forum.
extreme79 said:
@Oswald Boelcke I wrote on dev forum after reading what you linked.. because I think it's a developing thing.. I'm talking about a solution to reach what I described by coding.. Not really a ckassic end-user question.
This involve coding skills, android developing skills, but obviously before I need to know if this can be done by a programmatically point of view.
Anyway.. If you think my post is better placed in Q&A, it's ok, it's just to explain.
Click to expand...
Click to collapse
Good morning, Sir.
Please believe me I was thinking a real long time if I should move the thread or not. But then your below quoted statement was the decisive factor. Please refer to the subtitleof the former forum:
Android Software/Hacking General [Developers Only]
Technical discussion of Android development and hacking. No noobs please. Device-specific releases should go under appropriate device forum.
forum.xda-developers.com
extreme79 said:
I've experience in coding but totally new to android development, I never wrote a single line of code for our green robot.
Click to expand...
Click to collapse

Android qualcomm wireless modem AT Commands to lock on to one cell tower

I am trying to have a script I would assume (I am not an expert on this) with AT commands to have my modem connect ONLY to a single chosen cell tower (or perhaps a whitelist of towers). This functionality seems to be difficult to achieve as the chosen cell tower will not be the tower with the highest power reading.
I need some help or a consultant to help me. If I cannot achieve this on Android (it does not have to be Qualcomm), i would ask for help to perhaps achieve this on PC based modenfrom Quectel or SimCom. I have also looked at some IoT vendors so I would be open to others. I need a data connection only and would prefer T-Mobile but am open to whatever solution I can find. Cheers
joaobrasil said:
I am trying to have a script I would assume (I am not an expert on this) with AT commands to have my modem connect ONLY to a single chosen cell tower (or perhaps a whitelist of towers). This functionality seems to be difficult to achieve as the chosen cell tower will not be the tower with the highest power reading.
I need some help or a consultant to help me. If I cannot achieve this on Android (it does not have to be Qualcomm), i would ask for help to perhaps achieve this on PC based modenfrom Quectel or SimCom. I have also looked at some IoT vendors so I would be open to others. I need a data connection only and would prefer T-Mobile but am open to whatever solution I can find. Cheers
Click to expand...
Click to collapse
Hello and good evening, @joaobrasil
Welcome to XDA. I hope you'll always get the support you require.
However, prior to your next posting please read the guidances that are stuck on top of every forum like
Note: Questions go in Q&A Forum
If you are posting a Question Thread post it in the Q&A forum. Technical discussion of Android development and hacking. No noobs, please. Device-specific releases should go under the appropriate device forum...
forum.xda-developers.com
and the others. I've moved your thread to Android Q&A.
Thanks for your cooperation!
Regards
Oswald Boelcke
Senior Moderator
No problem. It also applies to windows to though

Custom firmware on cheap android tablet (YC-83p)

I'm not sure if this is the right topic for it.
But I was wondering if I could change the firmware on a cheap (YC-83p) tab.
Got it as a welcome gift from a course I got started. So don't have anny reasons to compain at all.
It doesn't has the greatest specs but it handles some basic stuff pretty well. So it's actually decent for bringing along on vacation or use it as a Home Assisstant controll tab.
It's actually this tab with slightly improved specs. (2GB of RAM instead of 1GB etc.):
Portable 8 inch Android 10 WiFi Tablet - YC-83T | Portworld Manufacturer
2021 New Arrival Portable 8 inch Quad-Core Processor Vertical Display 800*1280 IPS Screen Gms Android 10 1G+16G Android WiFi Tablet
portworld-solu.com
It's actually just fine as it is. But it seems it has some custom firmware onit, at least showing a custom bootscreen of the instution of the course. And I would like to change it if possible.
I searched the internet, but there's actually not much to be found.
So my question is if someone knows how to reflash this kind of devices, or at least change the bootscreen? I would prefer the first option if possible.
Thanks in advance!
edit:
It's running Android (Go edition) 11 btw.
Rockel said:
So my question is if someone knows how to reflash this kind of devices, or at least change the bootscreen? I would prefer the first option if possible.
Click to expand...
Click to collapse
Hello and good afternoon, @Rockel
Welcome to XDA. I hope you'll always get the support you require.
However, prior to your next posting please read the guidances that are stuck on top of every forum like
Note: Questions go in Q&A Forum
If you are posting a Question Thread post it in the Q&A forum. Technical discussion of Android development and hacking. No noobs, please. Device-specific releases should go under the appropriate device forum...
forum.xda-developers.com
and the others. I've moved your thread to Android Q&A.
Thanks for your cooperation!
Regards
Oswald Boelcke
Senior Moderator
Oswald Boelcke said:
Hello and good afternoon, @Rockel
Welcome to XDA. I hope you'll always get the support you require.
However, prior to your next posting please read the guidances that are stuck on top of every forum like
Note: Questions go in Q&A Forum
If you are posting a Question Thread post it in the Q&A forum. Technical discussion of Android development and hacking. No noobs, please. Device-specific releases should go under the appropriate device forum...
forum.xda-developers.com
and the others. I've moved your thread to Android Q&A.
Thanks for your cooperation!
Regards
Oswald Boelcke
Senior Moderator
Click to expand...
Click to collapse
Oh thanks! I already thought it was the incorrect toppic. But it was the best option I could find at the moment.
Totally missed this Android Q&A somehow
Rockel said:
I'm not sure if this is the right topic for it.
But I was wondering if I could change the firmware on a cheap (YC-83p) tab.
Got it as a welcome gift from a course I got started. So don't have anny reasons to compain at all.
It doesn't has the greatest specs but it handles some basic stuff pretty well. So it's actually decent for bringing along on vacation or use it as a Home Assisstant controll tab.
It's actually this tab with slightly improved specs. (2GB of RAM instead of 1GB etc.):
Portable 8 inch Android 10 WiFi Tablet - YC-83T | Portworld Manufacturer
2021 New Arrival Portable 8 inch Quad-Core Processor Vertical Display 800*1280 IPS Screen Gms Android 10 1G+16G Android WiFi Tablet
portworld-solu.com
It's actually just fine as it is. But it seems it has some custom firmware onit, at least showing a custom bootscreen of the instution of the course. And I would like to change it if possible.
I searched the internet, but there's actually not much to be found.
So my question is if someone knows how to reflash this kind of devices, or at least change the bootscreen? I would prefer the first option if possible.
Thanks in advance!
edit:
It's running Android (Go edition) 11 btw.
Click to expand...
Click to collapse
if you are on a rooted device, try this: https://play.google.com/store/apps/details?id=com.jrummy.apps.boot.animations&hl=en_US&gl=US
$cronos_ said:
if you are on a rooted device, try this: https://play.google.com/store/apps/details?id=com.jrummy.apps.boot.animations&hl=en_US&gl=US
Click to expand...
Click to collapse
Thanks, but I actually don't think it's rooted. Didn't cheked it yet though.
Actually looked for a way to root it, then it would be easier to put custom firmware on it I guess. But there's just verry little to completely nothing to be found of this tablet.
But I asume there must be a way sinse this institution was also able to customize some things.
Some questions:
How locked down is the tablet? Can you access gms services? Can you freely install apks? Are there developer options in settings and does it have the OEM unlock toggle?
Try to install adia64 and 7-zip. What is the processor? If it is mtk, you might be able to temp root your device.
Reviving this as I got this tablet as well and looking for possibilities.
I have posted here about my progress https://forum.xda-developers.com/t/can-we-root-this-tablet.4560407/page-2#post-88355463
Tablet is pretty generic but I don't seem to find any resource about it. Any ideas?

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