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[FIXED] - [Q] [JellyBean] How to switch on 4G?

I recently installed the JellyBean ROM for my A2 and changed few settings in the power manager after which I am unable to get 4G connectivity. I always see Edge in the status bar. I've tried re-trace my steps in the power manager but havent been able to turn on 4G yet.
Any guidance on how I could get my 4G back ?
----- UPDATE ----
I had to flash the same ROM again onto my phone and now its functioning properly. Still don't know the root cause but will report again if I see it happen again.
Thanks
Dhanvi

kapiladhanvi said:
I recently installed the JellyBean ROM for my A2 and changed few settings in the power manager after which I am unable to get 4G connectivity. I always see Edge in the status bar. I've tried re-trace my steps in the power manager but havent been able to turn on 4G yet.
Any guidance on how I could get my 4G back ?
Thanks
Dhanvi
Click to expand...
Click to collapse
Which JellyBean ROM? Please remember to be very specific as to the conditions surrounding the problem you're having!
I'd first try to go into Settings/ Below Data Usage tap 'More...'/ Mobile Networks
and make sure that 'Use only 2G networks' isn't checked.
Also, which carrier are you on? (I know most are on AT&T, but I'm on Straight Talk so I ask)

Alperon said:
Which JellyBean ROM? Please remember to be very specific as to the conditions surrounding the problem you're having!
I'd first try to go into Settings/ Below Data Usage tap 'More...'/ Mobile Networks
and make sure that 'Use only 2G networks' isn't checked.
Also, which carrier are you on? (I know most are on AT&T, but I'm on Straight Talk so I ask)
Click to expand...
Click to collapse
Thanks for your reply. I'm on the "MagicMod-Jellybean-Experimental" Atrix ROM on ATT.
The "Always use 2G" is unchecked which means that it should use 4G when available. Which bought me to the next section where I could search for network providers. When I searched for networks, most of the times my phone fails to find ATT in the list of available networks. I do have 4 bars on my phone though. I dont see the network provider name in the status bar so I dont know where it is connected currently.
My current hypothesis is that my phone is unable to connect/register to the ATT network and so I dont get 4G speeds.
Does that make sense?
Dhanvi

kapiladhanvi said:
Thanks for your reply. I'm on the "MagicMod-Jellybean-Experimental" Atrix ROM on ATT.
The "Always use 2G" is unchecked which means that it should use 4G when available. Which bought me to the next section where I could search for network providers. When I searched for networks, most of the times my phone fails to find ATT in the list of available networks. I do have 4 bars on my phone though. I dont see the network provider name in the status bar so I dont know where it is connected currently.
My current hypothesis is that my phone is unable to connect/register to the ATT network and so I dont get 4G speeds.
Does that make sense?
Dhanvi
Click to expand...
Click to collapse
Just so you know A small H by your signal bar means 4g. I am on AT&T and all I have to do is uncheck those boxes and reboot and data and MMS works fine
From my locked down superchargedV6 1.425ghz A "What tha duce?"

daavvis said:
Just so you know A small H by your signal bar means 4g. I am on AT&T and all I have to do is uncheck those boxes and reboot and data and MMS works fine
From my locked down superchargedV6 1.425ghz A "What tha duce?"
Click to expand...
Click to collapse
Yep. I'm aware that a H is 4G. I see an 'E' next to the signal bar. I did have an 'H' right after I installed my ROM but since today I'm only seeing 'E' .
I'll try flashing the CM10 ROM and check if that fixes my issue. If not, I'll copy over an apns-config.xml from an ICS install and replace my current one with that just in case.

try changing network mode by an awesome app called "Network" by phillip
in market .... it is simple & best option

shardul.phatak said:
try changing network mode by an awesome app called "Network" by phillip
in market .... it is simple & best option
Click to expand...
Click to collapse
Thanks for the tip. I'll try that. Looks like a reflash (of the same ROM) solved the problem for me though. Its back to 'H' for me. I still haven't tried to flash CM10.
Thanks for your help guys.

No mobile data after replacing the battery

I did replace the battery and lcd of my phone and update it to MM 5.8.019S, it show me that there is a mobile data in setting and show the symbol 3G & 4G but i can't connect to internet, somebody can help me please?

hash16 said:
I did replace the battery and lcd of my phone and update it to MM 5.8.019S, it show me that there is a mobile data in setting and show the symbol 3G & 4G but i can't connect to internet, somebody can help me please?
Click to expand...
Click to collapse
check setting an apn of ur service provider

There is no problem the APN settings, the phone show 4g on in the settings and I see the 4G symbols on the antenna beside the clock.

Lg g4 h810 works 2G only

Hi,
I bought this phone Lg G4 h810, it shows AT&T logo whenever i boot it and the problem is despite of network mode on lte/wcdma/gsm/auto it always runs on2G internet speed and shows E sign.
I am from india and many service providers are still not offering4G internet service. But this phone doesn't even runs on wcdma. My previous phone lenovo was nicely running on wcdma and always showed the sign H.
My cellular operator is idea cellular and i had a word with them, they sent me settings and all and help me input the settings manually too, but nothing worked.
I checked even the frequencies, idea cellular is offering UMTS B1(2100) and UMTS B8(900 gsm). I checked this on LG website and these bands are compatible with the phone i bought, but still i can't get anything more than2G. Why so?
Plus there is one more problem, when i switched it on for the first time it showed update available And when i tried to update, it showed error and now always there's an icon on top left corner of phone saying couldn't install system update. I tried restarting and updating the device many times, but it's still the same.
Any help is much appreciated.
Thanks in advance.

Have you put your Company APN?

Yes i did, the company executive even helped me to manually save the settings to run the internet in a 3G mode. But all efforts in vain.

Did you solve the issue?

Anything new? I have the same problem.

I have this problem too

Try hidden menu with *#546368#*810# and under Field Test menu / Modem settings if there is VoLTE on/off chose VoLTE and restart. I have done that and my phone starts working with 4G. Don't forget to set up good APN if it's not automatically set by network provider.

scytalemk said:
Try hidden menu with *#546368#*810# and under Field Test menu / Modem settings if there is VoLTE on/off chose VoLTE and restart. I have done that and my phone starts working with 4G. Don't forget to set up good APN if it's not automatically set by network provider.
Click to expand...
Click to collapse
Hi
Under VoLTE there is another entry named "Session" and in there
RPR(on/off) switch
I enabled it and restarts but it is again on 2g
Anyone further on this issue??

I have this problem too
I was flash the stock firmware,custom firmware customizing the build.prop,changed the settings in the engineering menu *#546368#*810# disconnected volte,changed LTE bands forcibly. Nothing helps,dont work 3G LTE - 2G only(. I realized that I need to re-flash (change) the original QCN file for H810 and re-register IMEI , but I can not find QCN it freely available.

Hello there, i had the same issue. The fix that worked for me was searching for network manuallly and reconnecting again to my carriers LTE network. Worked as a charm. The issue maybe was a brutal handover as I had been travelli g from a city to another one 200 km away. So somehow I had been disconnected from the LTE network and left stranded in the 2g one. Try it it should work

volte and wifi calliing

hi was wondering if there is any way how to enable volte and wifi calling? im using tmobile i dont see volte anywhere without root if possible for now?
Thanks

raven213 said:
hi was wondering if there is any way how to enable volte and wifi calling? im using tmobile i dont see volte anywhere without root if possible for now?
Thanks
Click to expand...
Click to collapse
VOLTE should work out of the box.

raven213 said:
hi was wondering if there is any way how to enable volte and wifi calling? im using tmobile i dont see volte anywhere without root if possible for now?
Thanks
Click to expand...
Click to collapse
Have you tried, *#*#86583#*#, to see if that works for you?

jcsww said:
Have you tried, *#*#86583#*#, to see if that works for you?
Click to expand...
Click to collapse
yeah i just dont see volte on my phone lol plus when i make a call it changes to 4g

raven213 said:
yeah i just dont see volte on my phone lol plus when i make a call it changes to 4g
Click to expand...
Click to collapse
4G is technically LTE. The Xiaomi firmware doesn't seem to have an LTE icon, at least not that I have seen. 4G and 4G+ are LTE and LTE-A.

jcsww said:
4G is technically LTE. The Xiaomi firmware doesn't seem to have an LTE icon, at least not that I have seen. 4G and 4G+ are LTE and LTE-A.
Click to expand...
Click to collapse
thanks for the info

After the *#*#86583#*#, try going into Mobile & Networks, and select your SIM card. There should be a VoLTE enabled option now. This option didn't show up for me until I did that and then I had to turn it on.
There's now a tiny VoLTE icon in the notification bar and when I'm on a call, it stays there.

Try code *#*#869434*#*# to disable VoWIFI check. And check if it working on T-Mobile.
I don't have Tmobile to check it.

mohanparvatham said:
Try code *#*#869434*#*# to disable VoWIFI check. And check if it working on T-Mobile.
I don't have Tmobile to check it.
Click to expand...
Click to collapse
No, VoWifi doesn't work on t mobile

What ROM's have people tried for WiFi Calling? Does the OP refer to T-Mobile in the UK/EU or USA? The Global Stable seems to have some less features compared to the Chinese Stable. I had Advanced Messaging working in the default text app when I was on Chinese Stable by doing nothing but it does not seem to work on the Global Stable.

got volte working on tmobile US just not wifi calling but its fine

raven213 said:
got volte working on tmobile US just not wifi calling but its fine
Click to expand...
Click to collapse
Which ROM is your device using? I really want to flash my green one back to the Chinese Stable. Global Stable just isn't as good in my opinion.

jcsww said:
Which ROM is your device using? I really want to flash my green one back to the Chinese Stable. Global Stable just isn't as good in my opinion.
Click to expand...
Click to collapse
Eu global the lastest one 10.2.2.0

Ever find a solution to this? I am on MIUI Global 10.3 (Stable) and am able to turn off Mobile data( T Mobile is my carrier in U.S.) and with my WiFi on the device i can still make and receive phone calls. In this configuration i obviously still see my WiFi symbol in the Notification bar as well as the VoLTE symbol. Don't know if this will help you at all, but it is some stuff i have noticed recently when i was trying to figure out why T-Mobile apps dont work on my Mi Mix 3.
With WiFi turned off and Mobile Data turned on i am able to make phone calls(obviously) with VoLTE and am able to see the LTE+ symbol in the Notification bar as well.
If i go to About Phone --> Tap "Internal Storage" 4 time(brings you to the Testing Menu) and looking into the Phone Info i see the following...
Set Preferred Network Type: LTE/TD-SCDMA/UMTS
Mobile Radio Power: On
VoLTE Provisioned: Off
Video Calling Provisioned: Off
WiFi Calling Provisioned: Off
EAB/Presence Provisioned: Off
When i bring this menu up on my previous phone(LG G7 ThinQ) i see that the Preferred Network type was different...so i changed my Mi Mix 3 just to match to see how it would change
My LG G7(without a SIM inserted) shows the following
Set Preferred Network Type: LTE/UMTS auto (PRL)
Mobile Radio Power: On
VoLTE Provisioned: On
Video Calling Provisioned: On
WiFi Calling Provisioned: On
EAB/Presence Provisioned: Off
Changing the network type on my Mi Mix 3 didnt do much, however when i changed it LTE/CDMA/UMTS auto(PRL) the VoLTE Provisioned and Video Calling Provisioned both switched to "On".
I dont quite understand this so for the most part i have just left it to match my LG's setting since i can change the network type back to LTE/UMTS auto(PRL) after and the settings stay set to "On"
Made a few test phone calls after with WiFi on and off, everything seems to work just fine regardless of what the phone displays.

[email protected] said:
Ever find a solution to this? I am on MIUI Global 10.3 (Stable) and am able to turn off Mobile data( T Mobile is my carrier in U.S.) and with my WiFi on the device i can still make and receive phone calls. In this configuration i obviously still see my WiFi symbol in the Notification bar as well as the VoLTE symbol. Don't know if this will help you at all, but it is some stuff i have noticed recently when i was trying to figure out why T-Mobile apps dont work on my Mi Mix 3.
With WiFi turned off and Mobile Data turned on i am able to make phone calls(obviously) with VoLTE and am able to see the LTE+ symbol in the Notification bar as well.
If i go to About Phone --> Tap "Internal Storage" 4 time(brings you to the Testing Menu) and looking into the Phone Info i see the following...
Set Preferred Network Type: LTE/TD-SCDMA/UMTS
Mobile Radio Power: On
VoLTE Provisioned: Off
Video Calling Provisioned: Off
WiFi Calling Provisioned: Off
EAB/Presence Provisioned: Off
When i bring this menu up on my previous phone(LG G7 ThinQ) i see that the Preferred Network type was different...so i changed my Mi Mix 3 just to match to see how it would change
My LG G7(without a SIM inserted) shows the following
Set Preferred Network Type: LTE/UMTS auto (PRL)
Mobile Radio Power: On
VoLTE Provisioned: On
Video Calling Provisioned: On
WiFi Calling Provisioned: On
EAB/Presence Provisioned: Off
Changing the network type on my Mi Mix 3 didnt do much, however when i changed it LTE/CDMA/UMTS auto(PRL) the VoLTE Provisioned and Video Calling Provisioned both switched to "On".
I dont quite understand this so for the most part i have just left it to match my LG's setting since i can change the network type back to LTE/UMTS auto(PRL) after and the settings stay set to "On"
Made a few test phone calls after with WiFi on and off, everything seems to work just fine regardless of what the phone displays.
Click to expand...
Click to collapse
Put the device in airplane mode, then turn on WiFi. Can you make calls? I can't! Turning on WiFi and enabling WiFi Calling doesn't mean the calls are going over WiFi. Especially if you are still seeing VoLTE or any time of mobile network connection.
Edit: Go down to the very bottom, hit more, hit IMS status, and see what it says.

Yeah I looked at the IMIS before, voice over wifi has always(I assume) said not unavailable

[email protected] said:
Yeah I looked at the IMIS before, voice over wifi has always(I assume) said not unavailable
Click to expand...
Click to collapse
No access to the IMS settimgs is more than likely why we can't get it working. We cam't see the settings to even compare them to what they should be.

I am on MIUI Global 10.3 (Stable) / Chinese Device / T-Mobile Germany.
VoWiFi as well as VoLTE are working on my device, however you need root access to enable the VoWiFi profile.
Once it is working you will see the WiFi calling icon in the status bar.
I was following this guide to enable WiFi calling on the Mi Mix 3:
https://forum.xda-developers.com/poco-f1/how-to/guide-activate-vowifi-wlan-call-t3871263
I don't know if the mentioned profile will work in other countries as well but maybe someone with more insight can shed some light into this.
I remember that VoLTE was working out of the box, you just have to disable the carrier check with the USSD code to make it available in settings.
VoWiFi can be enabled via USSD code as well, however even after changing the setting to enabled and preferred WiFi calling it does not register without the profile change.
VoLTE: *#*#86583#*#*
VoWiFi: *#*#869434#*#*
I had to redo the profile change after each upgrade with TWRP, since the firmware partitions get updated as well.
I hope this will help. :fingers-crossed:

I have Mix 3 with U.S T-Mobile service. After disabling the VoWiFi check with *#*#869434#*#*, the option for WiFi calling check box appears under the T-Mobile SIM section, but WiFi calling is not working when tested under airplane mode with WiFi enabled.

Vowifi works fine on MTS (Russia). All you need:
1. Activate vowifi service from the operator
2. Disable service check by command: *#*#869434#*#*
3. Create folder into: /system_root/system/priv-app/MBNLoader
4. Copy into this folder APK: MBNLoader.apk (View attachment MBNLoader.apk
5. Give right privileges: -rw-r--r--
6. Reboot phone
7. Install from play market QuickshortcutMaker: https://play.google.com/store/apps/details?id=com.sika524.android.quickshortcut
8. Open it and go to tab apps
9. Find Modem Config
10. Open it (tap) and you will see a lot of MCFG Modem configs.
11. Try one by one to start vowifi working
12. Enjoy!
Screenshots:

volte and 4g icons in status bar

Hello guys,
Now from what i know about this phone it is dual 4G and i have it enabled in developer options.
I also have volte service activated from operators on both sims, but only one sim displays the volte option and 4G icon in status bar. I have tried switching the sims and then volte/4G icon appears only for sim 2.
According to Network cell info software i have 4G/4G+ on both sims and Data Network is lte for both, so in theory both sims have volte and 4G enabled, but it displays only for one operator.
My question here is if anyone has volte/4G icons for both sims in status bar and if you can share a snip as proof.
Thanks.

Only works in Sim 2 for me, see attached screenshot.

At least you have 4G for both. Mine only shows 4G on the active data sim only.
Would appreciate if anyone posts a snip with both 4G/volte for both sims. i have a ticket opened at Huawei and want to give them an example that on how it should display.

I will show you tomorrow with 2 simms from Orange and Digi Romania.
Take in consideration that here Vodafone has VoLTE without showing a VoLTE icon on any phone. On Vodafone I can not switch off the VoLTE because is no slider/option on network menu. They activate VoLTE from their server so if I want to deactivate it I have to call them. You can verify if you are in the same situation as follow:
- keep data mobile on this sim (no WiFi).
- Network 4G
- initiate a phone call
If remains in 4G means you have VoLte activated but no icon (carrier option). If commute in 3G means you don't have VoLte activated
I will change the Vodafone Sim with Digi one to see 2 icons.
LE: Orange Romania + Digi Romania

Hi,
Ok, I can understand the volte icon is carrier dependent on Vodafone, but what about the 4G icon? For me it only shows 4G icon on the sim where I have data active only. Check attached pics.
And yes, I know about the test you mentioned and yes, it stays as 4G during a call. I know I have the option active(since for vowifi I get icons on both Orange and Vodafone) and I checked with Network Cell Info program and it says Voice Network is lte on both sims.

WishToLive said:
Hi,
Ok, I can understand the volte icon is carrier dependent on Vodafone, but what about the 4G icon? For me it only shows 4G icon on the sim where I have data active only.
Click to expand...
Click to collapse
You have to use Tweaker for Huawei.
View attachment 5015499View attachment 5015501
Apply and restart.
LE You can ask also here: https://forum.softpedia.com/topic/1148606-huawei-mate-30mate-30-pro/

Thx for the tweak tip.
@Sathelp : did you use the tweaker to get the 4G icons on both sims? Or maybe you see both because the phone is 5G model..

No, I hacked to get the VoLTE working (search for my thread) but the 4g is standard, sim one is Sky (O2) and sim 2 is EE (UK) . I have reasonable signal levels.

badmania98 said:
You have to use Tweaker for Huawei.
View attachment 5015499View attachment 5015501
Apply and restart.
LE You can ask also here: https://forum.softpedia.com/topic/1148606-huawei-mate-30mate-30-pro/
Click to expand...
Click to collapse
You must be root-user to apply changes.

luisvalino said:
You must be root-user to apply changes.
Click to expand...
Click to collapse
No, you don't. My M30P it is not rooted.

badmania98 said:
No, you don't. My M30P it is not rooted.
Click to expand...
Click to collapse
And with that app what that you get?
Can I make VoLTE calls or enable the VoLTE icon in the Mate 30 Pro's internal menu?

luisvalino said:
And with that app what that you get?
Can I make VoLTE calls or enable the VoLTE icon in the Mate 30 Pro's internal menu?
Click to expand...
Click to collapse
Follow the discution from the beginning. In this case, you can enable the network icon on the second Sim.

To be honest it asks me for root also to enable 4G icon on second sim. No idea why it works for you.

It asks because some functions need that. Not this one. It is better to try it. It is easy to do it.

I found the setting to display the 4G icon on both sims with SetEdit:
isShowNetworkType to be changed to 1

Sure. The same thing, different app. No root needed?