Question Cannot connect to AT&T network - Xiaomi Mi 11

I can make a call and text message but my mi 11 (CN version) cannot connect to the AT&T network. How can I fix this? Thanks for your reply.

I manually change the APN settings to reflect AT&T network and it works.

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Rogers Phone [unlocked], FIDO SIM, always Roaming...

Hi everyone. I have been doing a tonne of reading trying to figure out a couple of things for my Treo 750.
It is a Rogers phone for which I paid an online service provider to unlock. I am using my FIDO SIM in it without any problems.
It says I am always roaming and although assurances from FIDO I won't be charged Roaming fees, it gets kind of annoying everytime I check my email that it tells me I am roaming and asks if I am sure I want to do this....
So, I understand there is carrier specific info in the carrier.pxp file. I am told the Rogers network code is in this file.
Am I able to edit this to include the FIDO network code 302370 so the phone doesn't think it is always roaming?
Would it be better to unbrand / unlock the phone to WM6.1 via the methods I see here in the forums? [dubLeE's method].
Thanks everyone,
Ryan
It has nothing to do with your phone. It's the fact you are using the Fido GSM card on a Rogers network. It has nothing to do with whether your phone is locked or unlocked, and changing the carrier code won't do anything.
To disable the roaming network check when you check email, from Outlook Mobile go to Tools -> Options, choose the email account you've setup, then go to Send/Receive Schedule -> Advanced Settings -> check "Use automatic send / receive schedule when roaming"
Hi number16. Thanks for the reply.
The "Use automatic send / receive schedule when roaming" doesn't seem to prevent the "You are currently roaming. Synchronizing may result in additional charges" dialog box when the schedule is set to manual. In fact, the checkbox is greyed out and not selectable with a manual schedule. Even with an automated schedule configured, you are still prompted when doing a manual send/receive.
I was thinking that if the phone was configured such that it thought its' home network carrier code was the FIDO code, it wouldn't consider me roaming.
Anyways, sounds like I am stuck with it. Thanks again for the info
I have the exact same problem with my work Exchange email on a Rogers Touch Diamond. The roaming has to be defined by the ROM or registry. When I put my Fido SIM in a Rogers Samsung Jack flashed with the Fido ROM, there is no issue with roaming.
Hi there,
Same issue here, I am using my unlocked Treo 750 from Rogers on Bell network.
It works fine, except for the roaming issue.
How to get rid of that triangle icon on the top?
Were you able to edit the carrierDB.pxp file?
Please help.
Did you change your network settings over to the correct settings for the network of the SIM card you are using?
Unlocking a phone will allow other SIM cards to work, but if you don't change your network settings, then the phone will still try to connect to the Rogers network.
How do i unlock the network, i have a samsung corby phone which is rogers based and am using a fido sim card. Everything works except the internet which comes up as network error. please let me know if you can help. email- [email protected], thank you.
alyssaripley18 said:
How do i unlock the network, i have a samsung corby phone which is rogers based and am using a fido sim card. Everything works except the internet which comes up as network error. please let me know if you can help. email- [email protected], thank you.
Click to expand...
Click to collapse
This is a Palm Treo 750 forum. You should find a forum specific to your handset for exact instructions.
In general, your phone probably has a 'Settings' menu which would have some sort of option to edit your network settings. That's where you would make the change. You would have to get the proper settings from Fido.
startngate said:
Did you change your network settings over to the correct settings for the network of the SIM card you are using?
Unlocking a phone will allow other SIM cards to work, but if you don't change your network settings, then the phone will still try to connect to the Rogers network.
Click to expand...
Click to collapse
If I have the APN set to the one for the network of the SIM Card I am using then will I not get charged roaming?
Is it possible for it to actually be roaming and me not knowing about it?

VZW/XAA/VZW

Hello,
I have a Verizon Note 8 with Service provider SW ver. VZW/XAA/VZW instead of VZW/VZW/VZW on bootloader v4. The problem I have is under Mobile Networks, I dont have an option to change to Global or LTE/CDMA. My Preferred network mode is set to CDMA/EVDO/GSM/WCDMA. My only options under Preferred network mode are LTE/3G/2G, 3G/2G, 3G only, and 2G only. There is no option for LTE/CDMA.
Has anyone encountered this issue with Verizon phone?
Is there a solution to this problem?
My issue is that I cannot send MMS messages although everything seems to work.
Thanks in advance.

Impossible to create manually an APN with type "ims" on MI A2 stock rom August 2019.

Impossible to create manually an APN with type "ims" on MI A2 stock rom August 2019.
Hello,
just wanted to check if it's just me, my operator, or a common "issue" with MiA2.
<background>
I used the code to bypass VoLTE carrier check, managed to get my operator to enable it on my contract, and I do have the "HD" logo, so I do have VoLTE enabled.
However, if I check IMS status, only VoLTE is enabled, VoWiFi and Video Calls are disabled.
Since I found that some people with same operator than me (Bouygues Telecom in France), but with an officially supported VoLTE deveice (eg iPhone or Samsung) have an additional APN for IMS, I wanted to go and add it manually, see if it helps.
</background>
Here comes the actual issue... If I add manually an APN with any values in Name and APN fields and save it, I can see it. As soon as I add APN Type = ims, the APN disappears from the list.
So as you can see, no big issue that is impacting me here, but I'm just wondering if this is a bug in Mi A2 that others would have too... So if anyone has time to test the same steps and confirm if APN gets automatically deleted when adding APN Type ims?
Btw, if I add ims to the APN automatically populated, it does not disapear. It's only my new APN with only "ims" as type which is impacted.
I've tried to add an "ims" APN and i can confirm your problem, the APN is just disappeared (i've Ho. Mobile - Italy), so it's not carrier releated.
Sent from my Mi A2 using XDA Labs
mi a2 is missing the *#*#vowifi#*#* switch for vowifi. maybe it will get added with future updares
xiaomi blocked it

Is There Any Way to Enable VoLTE on SM-N960U?

So I have an AT&T branded, carrier unlocked, Samsung Galaxy Note 9 model number SM-N960U and I'm currently using Straight Talk as my carrier with a SIM card that uses AT&T towers. Voice Over LTE is disabled on it for AT&T towers and I've been trying off and on every time I get frustrated with my backup phone's cracked screen to find some way to make it function again but to no avail.
Anyone know of any magical fixes for this? I've done quite a bit of searching for answers and I've tried a bunch of things but not come up with any real fix for the problem...
Things I've tried include multiple different APN settings, turning on VoLTE Provisioning manually by dialing ##4636## (VoLTE Provisioned is grayed out with AT&T sim card but not other carriers cause of course it is), I've called Straight Talk and had them do whatever it is they do on their end multiple times with no success and unfortunately the only carrier we get signal with in my area is AT&T or I would be happy to just switch to a Verizon SIM. I also tried looking for a way to root the darn thing (and tried using the rom I found in another thread here to change it from N960U to N960U1 but mine must be on a different update than that rom) cause I'm sure with access I could bypass all AT&T's crap but my security update is too recent to allow for root access so I'm worried it may just be stuck...
Any ideas would be GREATLY appreciated! I'm so frustrated with this phone I'm half tempted to chuck it out my window lol.
Hi, @cloudyrei
I am currently on Old Folks Cellular/Consumer Cellular with an AT&T sim.
Had to change sim cards after the recent 3G shutdown because IMS no longer registered.
Are you using a launcher that can access activities on your N9?
If not, please download Activity Launcher from the F-droid store. I use it on N9 and N20U.
In the Activities menu, please search for: "Call Settings" - this will be found under Call Settings (com.samsung.android.app.telephonyui.hiddennetworksetting.MainActivity) and create a shortcut
"Mobile Network" - this will be found under "Settings" in Activities (com.android.settings.network.telephony.MobileNetworkActivity) and create a shortcut
"Phone info" is also listed under "Settings" in Activities (com.android.settings.RadioInfo) and create a shortcut
Please open "Phone info" and select "LTE only" at the "Set preferred Network Type."
This menu also shows Data network type and Voice network type, which should display "LTE."
On my N9, the "Call Settings" will not have anything selected underneath "Network" or "Band Selection."
Hopefully, you can access your mobile network settings for Straight Talk via "Mobile Network."
Then check settings for your SIM card status in "About phone."
Oh! Thank you for that app! That helps a lot so I don't have to type that string into the dialer every time!
Unfortunately this is what I'm looking at with LTE only selected and I also went through the whole list and tried every one of them just in case and they all look the same only with some variation in signal strength but that's about it...
You are welcome, @cloudyrei, and so sorry that I couldn't help you.
Please set your phone back to its original mobile network settings.
Please remove your screenshot because it has your phone number and other info on it.
Is your phone on Android 10, One UI 2.5?
I looked around for Straight Talk's (AT&T) APN settings, and found this:
Straight Talk APN Settings for Android 2023 - 5G 4G LTE APN USA
Straight Talk Verizon AT&T T-Mobile US 5G 4G LTE 3G Internet and MMS Settings for Android Galaxy S9 S8 S5 S6 S7 M21 M31 F41 S20+ S21 S21+ 5G Tab Note On HTC One Desire Wildfire LG Optimum Xperia LG APN Settings by SMS Text APN to 611611 Straight Talk APN for Android On the
www.apnsettings.org
Before tinkering with your apn settings, you may want to contact Straight Talk to confirm you have 4G LTE.
I had to contact the service provider for a new sim card because it would not register the IMS.
Here's the settings on my N9:
Oh heck you're right! I thought about that maybe having my info on it awhile after I put it up but forgot to go back and check! I haven't gotten any weird calls yet at least so woo!
Yes my phone is on Android 10, One UI 2.5
I reverted the mobile network settings and tried the other APN and it does make it so the mobile data works, however, I still can't make phone calls or text.
I'm sure I have LTE as all of the things function normally with the sim in the backup phone with the cracked screen I have, It's a Galaxy S10.
Here's my settings in the Note 9 as of now. I cropped out the part with my number and such this time lol.
Are you turning off the power in your N9 when you place the SIM card in it, @cloudyrei?
Thank goodness you did not receive any strange phone calls. lol
Does Straight Talk send you a "configuration message" via text for your APN, SMS, and browser settings when you place your SIM in your N9?
I do not download the configuration message for APN, SMS or browser settings.
I noticed that downloading each one changes the default SIM.
If you downloaded the configuration message settings, you could try setting it back to the default settings for your SIM by going into "Settings," "Connections," "Mobile Networks," then "Access Point Names."
Then reset to default by clicking on the 3-button menu.
Please power off your N9 if you reset the SIM.
Remove SIM, wait a few, Insert SIM, then power on.
My sim settings for AT&T:
MVNO reseller
Name: MVNO Reseller
APN: reseller
Proxy: Not set
Port: Not set
Username: Not set
Password: Not set
Server: Not set
MMSC: http://mmsc.mobile.att.net
Multimedia message proxy:
proxy.mobile.att.net
Multimedia message port: 80
MCC: 310
MNC: 410
Authentication type: None
APN type: default,supl,mms
APN protocol: IPv4/IPv6
APN roaming protocol: IPv4
Turn APN on/of: APN turned on
Bearer: Unspecified
Mobile virtual network operator type: GID
Mobile virtual network operator value: 2AC9
I don't think there should be any spaces between the items listed for APN type.
If this doesn't work, I hope someone can help you.
I had to request a new SIM from CC after the 3G shutdown.
The IMS would not register on the N9 or N20U.
The SIM card I had to replace was originally used in an unlocked Galaxy Note8, which was on Consumer Cellular network with a T-mobile SIM.
The new SIM is an AT&T SIM.
I remember reading that some N9 owners had problems after the 3G shutdown and had to get a new SIM.
Then, I tinkered around with the "Phone settings," (from Activity Manager's shortcut) and set it to LTE only.
jsusang said:
Please open "Phone info" and select "LTE only" at the "Set preferred Network Type."
This menu also shows Data network type and Voice network type, which should display "LTE."
Click to expand...
Click to collapse
Sorry to bring this back from the dead, but I bought my sister a Note 9 specifically for the deprecation of 3/2G.
Verizon finished sunsetting their towers recently and now my sister's N960U cannot even connect to the towers that would send config messages. And "VoLTE provisioned" is not enabled.
This sim works in other VoLTE phones and gets provisioned. Its only the N9 that won't provision.
One thing I noticed was the IMEI number under Phone Info is one number off from the IMEI that shows under "About Phone" is this normal?
I would figure that the IMEI should be complete in "Phone info" and maybe thus us the reason why Straight Talk can't provision VoLTE?
@rjones97
My apologies for replying so late to your questions about your sister's Note9.
Were you able to receive service with Straight Talk for her phone?
Unfortunately, we haven't. Straight Talk support is assuring me that everything is configured correctly on their side. The last thing they did was submit a report to Verizon about the account. They said to expect a reply the next day, but nothing came through.
Hi, @rjones97
Is your sister's N9 unlocked?
If your sister had service w/ Verizon/Straight Talk before Verizon ended service for 2/3G, you may want to ask if they will send you another SIM card for her Note9.
I had to get another SIM (AT&T) from Consumer Cellular because the IMS service would not register.
Or you could try these settings on this webpage to see if her phone will work.
Straight Talk - Verizon APN settings:
(Please read through the "comments" if you run into any problems to see if they may help)
straight talk Verizon apn settings – easy setup guide
Correct Straight Talk verizon Apn Settings - fastest and most updated LTE APN Settings. Name: straight talk, APN: ACCT.TF.GW6.VZWENTP, username: blank, pass
apn-settings.com
Straight Talk - Verizon APN settings for troubleshooting MMS not working:
https://apn-settings.com/straight-talk-mms-not-working/https://apn-settings.com/straight-talk-mms-not-working/
I hope this helps you set up her phone so she will have service.

Question S21U - Problems with data dropout upon receiving call

Is anyone having an issue where the data network drops from 5G to 3G upon receiving a phone call?
On S21 Ultra, Telstra network.
Have tried Network Settings Reset without assistance, and the telco claims everything is enabled on their end.
I'm also unable to find the VoLTE toggle under Network Connections and cannot enable call waiting - I wonder if this is related.
EDIT: Turns out it was indeed a carrier issue. Resolved with call to Telstra.
It is definitely related. If no VoLTE is set, network will always switch back fron 4G or 5G to 3G to support the incoming call.
Setting to use VoLTE (or 'call via 4G') should be under Mobile Network settings.
You may want to check with Telstra support, as VoLTE may not yet be activated for your device/subscription or apn settings are not correctly set.
@OnnoJ Thanks for the reply. The call via 4G toggle is missing from my "Mobile networks" setting page. I've seen others have a similar issue, but have not found a solution as yet.
Can't believe it - called Telstra again and they now found VoLTE was NOT provisioned! They fixed it on their end and all is working.

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