Android 9, MMS, national roaming and mobile data - Android Q&A, Help & Troubleshooting

Hi!
I started having problems with sending/receiving MMSes after upgrading my HTC U11 to Android 9 a few days ago.
The problem disappears when I turn mobile data on.
My mobile operator uses its own transmitters but also uses networks of three other operators to provide services in areas where they have no coverage.
That's why I always have National Roaming active in my settings. If I have a weak signal, I can switch to a different operator (with whom my MNO has an agreement).
For many years using different Android versions and different HTC devices I could use national roaming without having to turn mobile data on.
I turned the mobile data on only when I had no access to Wi-Fi and wanted to connect to the internet.
And now if mobile data is off I can only send/receive MMSes while connected to my home network/operator. Whenever my phone switches to a different operator, I am unable to send or receive any MMS and I have to turn mobile data on.
Looks like national roaming was previously separated (worked independently) from mobile data and now it works only when mobile data is on.
Do you think it's related to the new Android version itself, or maybe to its interaction with a specific phone model?
Best regards,
Matt

Related

can you switcg data off on 2g networks

Hi Guys, I got fond of the Hero a lot. and requested a friend to get one for me on his way from london (sim free, unlocked)
1 thing concerns me is the data consumption over 2g networks as its quite expensive here
I need to know if I can stop data transfer without affecting calling ability???
this is crucial in my decision to buy
Appreciate your clear and quick responses.
danihasbini said:
Hi Guys, I got fond of the Hero a lot. and requested a friend to get one for me on his way from london (sim free, unlocked)
1 thing concerns me is the data consumption over 2g networks as its quite expensive here
I need to know if I can stop data transfer without affecting calling ability???
this is crucial in my decision to buy
Appreciate your clear and quick responses.
Click to expand...
Click to collapse
Settings > Wireless Controls > uncheck "Mobile Network" > Qapl'a!
you can even put a Mobile Network Toggle on the desktop to just switch it on and off.
Whilst off, you can still send and receive SMS and calls, but not MMS.
Dayzzz
Dayzee said:
you can even put a Mobile Network Toggle on the desktop to just switch it on and off.
Whilst off, you can still send and receive SMS and calls, but not MMS.
Dayzzz
Click to expand...
Click to collapse
do i need to download a special application or is it a native one?
do i need to root the phone?
Thiesen said:
Settings > Wireless Controls > uncheck "Mobile Network" > Qapl'a!
Click to expand...
Click to collapse
does shutting mobile network shut data only?
the toggle is native
no you don't need to root the phone
yes, it only shuts off mobile data (including MMS), this is why it's called mobile data, and not airplane mode. Wifi is unaffected.
Data Roaming
Hi everyone,
We've just started using the Hero at work as a business phone, a lot of our employees travel internationally on a regular basis.
Using our old WinMo phones, picking up emails whilst roaming was automatically disabled by default but could be manually sync'd with our exchange server if required.
On the Hero, there doesn't seem to be a similar function. You have to go in to the Mobile Network settings and disable 'Data Roaming'.
My question is, if I disable 'Data Roaming' but still have 'Enable Always-on Mobile Data' active, will any downloaded apps still be able to connect and update i.e Twitter gadget for instance? Or does disabling 'Data Roaming' stop data connections full stop?
The ideal scenario for us would be something that is quick and easy to turn off (or turn on) that would prevent any data connection but will let us open up the Mail app and sync manually with our exchange server if required (like we could with WinMo).
I currently have the Toggle Selector app on my home screen to quickly get to the Mobile Network settings. I'm just not sure what to enable/disable in the settings menu that will let me get mails manually and prevents all other data connections.
Any advice or suggestions would be more than welcome. It's got us scratching our heads a little and is stopping us from upgrading other staff phones as we don't want to end up with a phone we can't use as a business tool internationally as it costs us the earth in data roaming charges.
The easiest way i can think of would be to have the toggle on screen, and when you want to sync, you turn it on, manually refresh the emails and then turn it off again.
if you have data roaming blocked, it will override the 'always on mobile data' setting, so no, when roaming is turned off, nothing will connect when you are abroad.
honestly though, android is not ready for business really, which is why HTC are pitching it at the consumer market mainly.
I am in the same position, just want to be clear, with the "toggle" will it stop all data? (including browser, mms texts, apps updating) i only want these when i have wifi.
thanks in advance
to make it absolutely clear:
When at home,. turn mobile data off and NOTHING can access GPRS.
When roaming on another network when abroad, turn data roaming off and GPRS is blocked. To access GPRS, you have to turn data roaming AND mobile data on to access GPRS.
The Data roaming toggle has precedence over the Mobile data toggle.
Thank you, appreciate it
I have noticed toggling mobile networks occurs twice. What I mean is, after toggling a couple of times, I cannot seem to coonnect to 3g anymore? In that case I always have to restart my phone. Anyone experiencing this issue? It could be a bug. I used To have a blackberry bold and that bug was fixed by an update

[Q] Roaming and hanged connections

Hi
One week ago I moved my personal phone number to a roaming phone operator, called simyo (belongs to KPN). Several times per day when I try to access internet (I use push mail, always on gtalk, etc) cant do it. It seems is connected the internet. The coverage shows 3G and the uplink arrow shows activity. Of course I ve marked the options "Use on roaming network". I need to reset the device or turn on/off airplane mode. I had a similar problem with windows mobile time ago in other samsung device. Never had this problem with other phone operator or using the roaming operator (simyo) with other android device. Any idea?

[Q] How to enable 3G on Viewpad 7

I have recently purchased a viewpad 7. I have also enabled 3G services from my operator. Can somebody help me in the following:-
(a) How to start a video call?
(b) What will be the indication for 3G services running on the pad?
(c) Can someone show me a display of the screen with 3G services enabled?
What is your mobile operator (and country, if applicable) since we have users around the globe on this sub-forum?
Based in US, I've used a prepaid 3G Sim from AT&T (also, tested my China Mobile HK/China dual phone # prepaid Sim) and getting E(dge) or 2G+ voice/data services only along with much faster secured wifi (20GB broadband) - but I'm setup to use Google Voice for all voice calls.
Regardless, the upper right portion of the status bar (on top of the display) should show the "H" or "3G" symbol when data is active.
Try by going to Settings, Wireless & network settings and check your Mobile networks - check that Data is enabled (including roaming, if applicable) and that Network Mode is configured properly, also APN is set for MMS per your mobile operator specifications, etc. etc.
I'm doubtfull about its ability to easily take/make video calls over mobile network (possible & probably easier to configure over wifi - with the proper software as bandwidth needed could be part of the issues) - however, I could be mistaken & not fully up-to-date on this.
I am using BSNL network India. In the mobile network settings on enabling data, the download E symbol shows up on the top right with arrow marks. I am able to load/upload data but no video calls. The review says that video calls are possible with the viewpad 7. But how please help.....
view this thread i have just run into the same problem
http://forum.xda-developers.com/showthread.php?t=1267297
and there is the solution, if you have a different network, pm me ill work out the solution for you
note im with o2 in the uk, as for your other questions, to indicate you have a 3g signal, there will be a 3g icon next to the signal bar, in my case its a H as im connected to a HSDPA signal.
I put my automatically: S
mahua402 said:
I have recently purchased a viewpad 7. I have also enabled 3G services from my operator. Can somebody help me in the following:-
(a) How to start a video call?
(b) What will be the indication for 3G services running on the pad?
(c) Can someone show me a display of the screen with 3G services enabled?
Click to expand...
Click to collapse
DOes it mean, your VP7 can not connect to internet via mobile/SIM module? I had the same problem with the latest official ROM from VS. I Had to install FM6-3350-0-1008-A01.nb0 which I have to find on this forum. Unfortunately I have lost Czech localization.

Cellular network issue (StraightTalk, AT&T, Marshmallow, LePro3)

Background:
LeEco LePro3 (LEX727) bought a year ago and in service since that time.
Not rooted. (Nor do I wish to root, if that was even possible.)
Use Nova Launcher for better desktop experience
StraightTalk on AT&T network. Indoors, usually shows LTE with 2 bars.
"Fully patched". LeEco EUI version 5.8.021S. (No LeEco Android updates available since 1/2017 as they pulled out of the USA market.)
Android 6.0.1.
Android security patch level January 1, 2017.
Handset worked fine for many months.
There was no obvious change or trauma to the handset (no drops, skills, weather exposure, etc.)
Lately, there have been data issues when WiFi is disabled.
(Everything still works with a WiFi connection.)
Not all features work with the StraightTalk/AT&T data connection when WiFi is disabled.
StraightTalk/AT&T data function details:
SIM card status
Signal strength -110 dBm 27 asu
Cellular network type LTE
Service status Voice: In service / Data: In service
Cellular network state Connected
Phone works (can make & receive calls).
Simple text messaging works (can send & receive texts)
MMC messaging works (can send & receive MMC texts)
(Ookla) Speedtest App works with good speeds.
Google Chrome browsing does not work "ERR_EMPTY_RESPONSE"
Firefox browsing does not work "Secure Connection Failed The connection to the server was reset while the page was loading."
Gmail does not download messages, sent messages are stuck in Outbox ("Queued")
Google Maps does not work "Can't connect to Maps".
Google Play does not work. When searching for Apps, "No internet connection. Make sure Wi-Fi or cellular data is turned on, then try again."
Troubleshooting steps taken:
Adjust AT&T APN settings used as per StraightTalk Tech Support.
Change out StraightTalk/AT&T SIM card with StraightTalk Tech Support assistance.
Factory/Hard Reset with reinstallation of all accounts & Apps.
Anyone know how to fix my web data issue? (Or know what further tests/observations to make?)

Constant disconnect and reconnects when using mobile data on 4G LTE network

I'm using a Samsung Galaxy S9+ for a couple of weeks now and noticed a strange issue.
Whenever I'm connected to my service providers 4G LTE network and use mobile data, I can see mobile data along with the mobile network get disconnected and reconnect quite frequently. As in, I can see the mobile signal indicator turn to no signal and then back on again.
It seems to occur when there is a burst of data communicating through the connection. i.e. start of a Youtube video playback, doing a speed test etc. It's quite frequent and annoying.
So far I've tried the following to no avail:
- Network reset
- Using a different SIM card
- Booting the phone in safe mode
Pretty sure it's not a network provider issue because my wife uses the exact same phone with exact same firmware and hers does not have this symptom.
Any help is appreciated.
P.S. - I have not seen the issue when connected to WiFi on the HSPA+ network of the provider. Seems to occur only on 4G LTE.
I tried the following additional scenario:
I put two sims;
SIM 1 for calls and text on 3G/2G auto connect
SIM2 for data on LTE/3G/2G auto connect mode.
SIM2 connects to 4G. Whenever there is a sudden burst of data on it, mobile networks on both SIMS disconnect and reconnect.

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