Data not working away from home - Xiaomi Redmi Note 4 Questions & Answers

When I'm at home I have no problem using data on my Three SIM (when I'm using the Internet a lot I switch on WiFI but things like Discord and Whatsapp work fine when WiFi is disabled) but when I'm out I often can't use data, even though I have a good signal and the 3G/4G symbol is showing.
Sometimes it works if I switch the data to my other SIM (Asda), check that it's working and then switch data back to Three but not always. I've tried disabling the firewall (AFWall+) but I have a special Out profile I switch to when going out to allow data access to more apps than with my Home profile, so the firewall shouldn't be causing problems.
I've also tried setting Roaming to Always in the system settings but that doesn't seem to make any difference.
Clearly lots of people are using their Note 4's on 3G/4G without any problems, so any ideas why I'm having so much trouble?

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[Q] While connected through Wifi, Opera does not connect

Apologies if this has been resolved eslwhere, but I did a thorough search and I could not find the solution in similar questions asked for the exact problem I am having.
I have an HTC HD2, basic Rom 1.66.405.2 (76641)with Max Manilla, Radio version 2.06.51.07.
I have previously used Opera 9 and Opera 10 to surf the internet along with Skyfire with no problems when using the 3G connection or when connected to my home or work WiFi, until a few weeks ago. When connected through WiFi, having changed nothing on the network routers or my phone, I just cannot get to pages. The same is with the facebook app and any updates via weather or stocks/shares.
It seems that as soon as WiFi is connected there is no data connection.
I have checked data connection and it is OK, I have also tried the slider the best as suggested on another forum, even re-installing Opera 10, to no avail.
I am considering switching to Energy Max Sense at the moment but hesitating as I can't bear going through another hard reset and re-installing everything, but this issue might just force me down that route.
Any thoughts before being forced down this route?
Been through lots of different settings and basically it appears that once wifi is connected I lose all data connecions, nothing then connects.....Please help?
Did you ever get this fixed, because I am now having the same problem.
I used to get internet data connection via wifi by first turning off data connection in comm manager, then turning on wifi. I must have screwed something up, because now I cannot get any data traffic via wifi. I can't even get data from my cell network whilst wifi is on, I have to turn it off to get my GPRS connection back. Bit frustrating, been through connection setup and delete/setup network many times to no avail. What have I done... harrumph!
gadgetuk437 said:
Did you ever get this fixed, because I am now having the same problem.
I used to get internet data connection via wifi by first turning off data connection in comm manager, then turning on wifi. I must have screwed something up, because now I cannot get any data traffic via wifi. I can't even get data from my cell network whilst wifi is on, I have to turn it off to get my GPRS connection back. Bit frustrating, been through connection setup and delete/setup network many times to no avail. What have I done... harrumph!
Click to expand...
Click to collapse
Why Disconnect data connection before activating WiFi?
I leave it on, still it will get data through WiFi is available.
If you disconnect data connection, you will not get data through data connection. (while you have WiFi activated, as you switch it off)
Have you tried using both at same time? Perhaps disconnecting data connection does a "trick" so you can not get data through WiFi too and you are now experiencing expected behaviour. (And that it did before was the wrong situation.)
i tried lots of stuff, soft resetting each time, I then did a full sync and backup to my home PC (work PC has firewall and stopps internet connection).
After that I did a cache cleaner and emptied a lot of trash, it did appear to be running slow. Did another soft reset and voila in the morning it was all working.
I played around with settings, double checked everything and to the best of my knowledge nothing had changed to cause this fault, so no idea if it was a problem with synching between the two PC's, work and home, or whether the cache cleaner did the bizness. Never had the problem repeat again since.
Have you tried getting settings from your provider again maybe something got wiped by accident.
try this thread
forum.xda-developers.com/showthread.php?t=609021
hope that helps......
conantroutman said:
forum.xda-developers.com/showthread.php?t=609021
Click to expand...
Click to collapse
It did indeed, thanks.

[Q] Wifi and data on at the same time, limited internet.

Rooted stock ROM Verizon I605 running 4.1.2.
I was in Korea for the past 6 months and just got back the other day. Before I left, I never had any problems, but since returning, my wifi and data are on at the same time, and it's causing me problems. Here's what's going on:
If I just have mobile data on, everything works as it should. If I turn on Wifi, it will connect, but the data connection will also remain, and my internet speeds will become spotty. If I turn on mobile data and just try to use wifi, the Wifi icon appears (with the orange/green arrows indicating activity), but apps don't connect. Facebook automatically tells me "No Internet connection," Opera won't load pages, Google Talk can't sign in, etc. If I turn mobile data back on, things work again, albeit slowly.
The strange thing is if I turn on Airplane Mode and then turn it off, leaving data off, my wifi will work 100% normally. If I try to turn on mobile data again, I get the same issue.
While I was away, I replaced the SIM card so I could use my phone over there. I messed with some APN stuff thinking I would be able to get data on my phone in Korea, but that didn't work out so I returned my APN settings to default. I have a feeling that's the source of my problems, but I have no idea how to fix it. I tried restoring my APN settings to default through the settings, but that didn't fix it either.
Any help at all would be appreciated!
If it helps I have been seeing the same thing. I'm on CleanRom 3.5 (Verizon Rom base) and PB&J kernel. It seems to be hunting between them even when in strong wifi signal.
Interestingly enough it's not doing it right now.
I'll keep a closer eye on it now.
Sent from my SCH-I605 using xda premium
In my case, it's a constant problem (unless I manually go into airplane mode, like explained). It doesn't work sometimes and not work other times.
I'm trying to use wifi at home, so signal strength isn't an issue either.

[Q] Wifi switching to mobile data (and back)

Hi everybody,
I'm facing an annoying problem: when my phone "considers" the wifi signal "too weak", it automatically switches to mobile data (even if the latter are disabled), the result is the mobile frequently drops the wifi connection in some places at home where the signal is a little less intense.
In my phone, options in the advanced settings of the Wi-Fi do not let me choose anything about automatic switching from wifi to mobile data (or such options aren't displayed)...
What can I do?
Is there a way to access "hidden" settings like the ones mentioned?
Thanks for your answers!

Question Failing to switch to cellular data with "Mobile data always active" switched off

If I go into developer settings and switch off Mobile data always active (in an attempt to save a little power when the phone is on Wifi), I find the phone often doesn't enable data when I leave Wifi. I have to cycle airplane mode to make it do it.
Anyone else finding the same bug? Or even using this setting?
I've had dropped connection issues since day 1, with airplane mode being the only way to restore my connection. And this was with Mobile Data always active set to on.
Who is your Carrier??
Have you noticed similar issues even with mobile data always active?
When I go to building with no cellular and come back outside. The phone doesn't automatically reconnect to cellular, leaving me with no service. What a strange bug.
JonnyTrulove said:
I've had dropped connection issues since day 1, with airplane mode being the only way to restore my connection. And this was with Mobile Data always active set to on.
Who is your Carrier??
Have you noticed similar issues even with mobile data always active?
Click to expand...
Click to collapse
EE in the UK. Works fine almost all the time so far if I keep mobile data active.
Vodafone Romania, toggled the setting off in dev options as soon as I got the phone. Data switching works fine still.
Try going into the testing menu (dialer code *#*#4636#*#*), select phone information, select 3dot menu on top right corner, try switching around between Europe and automatic. I'm my case ,selecting Europe presented various weird connection issues , biggest of which was that the phone refused to connect to LTE unless I used "automatic".

Question WhatsApp issues with Wi-Fi Connection

I have tried different Wi-Fi connections but it sill once in a while tells me that specific app can't work on Wi-Fi, only with mobile data. The issue with that is that I don't have good signal reception at home. Would appreciate any suggestions to solve the issue. I have tried several solutions found online such as: uninstalling and installing back again with a backup, deleting cache and data, resetting Network settings. I have never had an issue like this before with anyother phone.
You can keep the Wi-fi connection at the center of the house which will cover eventually every place, or keep it closer to your room so it won't get disconnected! As for the apps, you can go to the app settings and change the network usage from mobile data to wi-fi. Which apps are not connecting to Wi-fi?
Edward Joseph said:
You can keep the Wi-fi connection at the center of the house which will cover eventually every place, or keep it closer to your room so it won't get disconnected! As for the apps, you can go to the app settings and change the network usage from mobile data to wi-fi. Which apps are not connecting to Wi-fi?
Click to expand...
Click to collapse
It only happens with the WhatsApp app. I think I found a workaround. This problem may happen if you have multiple access points in your house. Even though is not a proper solution (the issue never happened with my old phone), you just have to turn off and on Wi-Fi and dismiss the notification. WhatsApp will probably work fine after that.

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