Lost LTE on Verizon after coming back into the country - Xiaomi Mi MIX Questions & Answers

Hi all,
I'm running into a very strange problem and I need some help.
I'm running MIUI 9 7.8.31 WEEKLY.
I was in Asia earlier this month and I was roaming on my Verizon sim, no problem at all.
But after I return to the US, the phone register with Verizon Lte and all I get is '123456 3G' as the carrier name. I do have internet but it's slow.
I tried messing around with the APN settings and had no luck. See attached.
Any help is appreciated!

I have this same issue. Some help please!

Update to the 7.9.14 or 7.9.21 and it will automatically have all the Verizon apn's.

Related

[Q] Please help me, no 3g, then no data at all

I bought nexus one from my friend.
I am currently using HD2 with 3g data.
When I plugged in my sim card to the n1, it only worked with edge.
So, I seared internet for some information and I found out something about "*#*#6436#*#*" and change the setting to WCDMA only. Then the phone got no signal at all, so I changed back to WCDMA preferred. Then I did ping test but it did not seem to work very well.
Then I played with some APN setting and I realized that I lost data connection completely (phone still working)
I have tried to reset the phone but no luck.
Can anyone please help me with the problem? I am using T-mobile.
Thank you.
Pull your battery, and look at the back of your phone. At the top of the dark area there are numbers, look at the PB or FCC ID numbers. If they end in 9110 then you have an AT&T version of the phone, and the hardware will not work with T-Mobile's 3G service...
khunny7 said:
I bought nexus one from my friend.
I am currently using HD2 with 3g data.
When I plugged in my sim card to the n1, it only worked with edge.
So, I seared internet for some information and I found out something about "*#*#6436#*#*" and change the setting to WCDMA only. Then the phone got no signal at all, so I changed back to WCDMA preferred. Then I did ping test but it did not seem to work very well.
Then I played with some APN setting and I realized that I lost data connection completely (phone still working)
I have tried to reset the phone but no luck.
Can anyone please help me with the problem? I am using T-mobile.
Thank you.
Click to expand...
Click to collapse
are you in the USA? you need to list your location. it is likely that you purchased the wrong version of the nexus one. there is an ATT version and a tmobile version. each only works with the proper 3G. so an ATT n1 on tmobile only gets edge, and vice versa. check which version you own.

Xperia Z3 D6603 Tmobile LTE keep dropping

I bought a D6603 unlocked online few months ago and was able to get on Tmobile LTE without issue till recently, where the LTE connection keeps on dropping and I have to download the internet setting everytime in order for me to get onto the network.
I have checked the APN setting and also obtained a new SIM card from Tmobile but the issue remains. Based on the Tmobile store associate Tmobile is currently making updates to their network and international devices might not be able to get on their network. Does anyone know if there's anyway around it in order to keep my device on their LTE network? Or force the phone to use only a certain band on the phone?
archerdino said:
I bought a D6603 unlocked online few months ago and was able to get on Tmobile LTE without issue till recently, where the LTE connection keeps on dropping and I have to download the internet setting everytime in order for me to get onto the network.
I have checked the APN setting and also obtained a new SIM card from Tmobile but the issue remains. Based on the Tmobile store associate Tmobile is currently making updates to their network and international devices might not be able to get on their network. Does anyone know if there's anyway around it in order to keep my device on their LTE network? Or force the phone to use only a certain band on the phone?
Click to expand...
Click to collapse
The same thing happens to me. I have switched to HSPA. It all started after 5.1.1 update

Lenovo K3 Note Android Marshmallow Data Connection Error

Hi, I have the Indian version of the Lenovo K3 note (K50a40), and recently installed the official OTA android 6.0 marshmallow update. Everything on the phone appears to be working, including calling and texting (on T-Mobile), except for data connection. Before the update, I would be able to connect to and receive H+ from T-mobile in the USA, but now, even with full bars, the phone lacks data connection. I tried enabling roaming and changing the APN to no avail. Can someone please offer any advice? Any help would be greatly appreciated.
alokpillai22 said:
Hi, I have the Indian version of the Lenovo K3 note (K50a40), and recently installed the official OTA android 6.0 marshmallow update. Everything on the phone appears to be working, including calling and texting (on T-Mobile), except for data connection. Before the update, I would be able to connect to and receive H+ from T-mobile in the USA, but now, even with full bars, the phone lacks data connection. I tried enabling roaming and changing the APN to no avail. Can someone please offer any advice? Any help would be greatly appreciated.
Click to expand...
Click to collapse
same is happening on my sis k3 not(indian)... whatsapp and hike msgs are not getting sent... but playstore and other stuffs works on 2g net.
sagar27691 said:
same is happening on my sis k3 not(indian)... whatsapp and hike msgs are not getting sent... but playstore and other stuffs works on 2g net.
Click to expand...
Click to collapse
I fixed the issue. for some reason, the update messes up the APN settings. To fix this, google the APN settings for your carrier. Make sure that they are the settings for 4g or LTE. Then, on your device, go to settings>data usage>more>mobile network>access point names>new APN, and enter the information you just looked up. You may need to restart the phone.
alokpillai22 said:
I fixed the issue. for some reason, the update messes up the APN settings. To fix this, google the APN settings for your carrier. Make sure that they are the settings for 4g or LTE. Then, on your device, go to settings>data usage>more>mobile network>access point names>new APN, and enter the information you just looked up. You may need to restart the phone.
Click to expand...
Click to collapse
But bro in india apn for all networkrs are same...
Like for vodafone its www for 2g/3g, for docomo TATA.DOCOMO.INTERNET.
and here in gujaratnwe dont have 4g yet...
If u say so i try to set new apn and let u know
alokpillai22 said:
I fixed the issue. for some reason, the update messes up the APN settings. To fix this, google the APN settings for your carrier. Make sure that they are the settings for 4g or LTE. Then, on your device, go to settings>data usage>more>mobile network>access point names>new APN, and enter the information you just looked up. You may need to restart the phone.
Click to expand...
Click to collapse
Hi, your solution does not fixes this issue (((

[Moto G] Can not access AT&T cellular network with CM13

Hi All,
I have a Moto G 2014 (titan) and have been using CM for a while. Last month I just moved to USA and joined T-mobile. It was good but expensive. So I switched to a family plan of AT&T last week. However, I can text and call, but could not access internet through AT&T cellular network. Custom services only tried to change SIM card and change APN settings (we tried a lot of APN settings). But none of them works. (Of course it works when you put the SIM card in another phone). So after googling for a while I guess the problem is with the "modem" firmware? I am not sure though, 'cause I am able to set APN. I hope you guys can direct me to the right direction. I was using a version of CM13 last month when I am with T-mobile. It worked fine. I did not do any updates when I switched to AT&T. However I just updated to cm-13.0-20160906-NIGHTLY. The problem persists. BTW it now just shown the signal but no sign of 3G, however, I do not remember if it is suppose to shown that. Does that mean I am not connecting to the 3G network at all?
It would also be real helpful if you can direct me to learning resources of cellular networks and how to troubleshoot such problem. For example, I found myself have no clue of the answer to the following question (excuse me if they are silly questions) and could not find an answer by google,
Is the APN settings related to the type of hardware of firmware that I am using? Does a specific hardware/firmware works in one APN but not another?
Thanks a lot!
Hey guys! I solved the problem by just erase modemst1&2 without install new modem firmware. Could anyone tell me why?

S6 Edge SM-G925V LTE not working after Nougut update on non-verizon.

My S6 Edge SM-G925V worked perfectly back in India on Vodafone Band 3 LTE until marshmallow update. In the Nougat update verizon/samsung has some issue with their cellular firmware - after that i am never able to camp to any LTE network.
It was running smooth until the G925VVZW4CPD2 (6.0.1) update, all settings are ok. I tried the other popular network sim of JIO ( Band 40) that also is same. Bigger problem is that the modem crashes far too many times on the 2g/3G also. I can see the networks bar go and come in a loop again and again, making phone useless.
Verizon surely has messed something up with the latest 7.0 update, which they deny (have contacted them). There are couple of forums in Sammobile on the same. No luck with solution.
Just yesterday got one more update of 2GB which brings it to one update over 7.0. No luck. Still no LTE camping.
Do not suggest to check the APN settings i have checked they good. Anythings else or you also facing same issue ?
Can anyone show how to get the blocked service menu (via codes) working ?
Got the same problem. I immediately updated my phone from Marshmallow to Nougat via system settings.
I got the S6 Edge Verizon. Made several readings and found out that the device is unlocked, so I bought a local LTE SIM card (SMART) here in the Philippines and inserted it to the device. I applied the appropriate APN settings for the LTE and tested the connection. No luck. I wasn't able to test the LTE connectivity when I was in Marshmallow though.
I was able to connect to the internet via 3G connection and IT WAS WAAAY TO SLOW (0.5 mbps)
I tested the same settings with the Galaxy S5 (Verizon), still with a local LTE SIM card (SMART). LTE connection was immediately established (15+ mbps... not bad). This proves that my area is covered by LTE and the problem is on the S6 Edge. Is there a way to fix this?
anirudhgargi said:
My S6 Edge SM-G925V worked perfectly back in India on Vodafone Band 3 LTE until marshmallow update. In the Nougat update verizon/samsung has some issue with their cellular firmware - after that i am never able to camp to any LTE network.
It was running smooth until the G925VVZW4CPD2 (6.0.1) update, all settings are ok. I tried the other popular network sim of JIO ( Band 40) that also is same. Bigger problem is that the modem crashes far too many times on the 2g/3G also. I can see the networks bar go and come in a loop again and again, making phone useless.
Verizon surely has messed something up with the latest 7.0 update, which they deny (have contacted them). There are couple of forums in Sammobile on the same. No luck with solution.
Just yesterday got one more update of 2GB which brings it to one update over 7.0. No luck. Still no LTE camping.
Do not suggest to check the APN settings i have checked they good. Anythings else or you also facing same issue ?
Can anyone show how to get the blocked service menu (via codes) working ?
Click to expand...
Click to collapse
I have the same problem, since the update I can't connect to LTE, I've tried forcing the 4g/lte network but it simply wont connect.
so no answer to this yet huh? issue with wifes phone so i cant call her during the day but text are still getting through thank god!
I installed the new update via the smartswitch. Sw ver: NRD90M.G925VVRU4DQF3
This also did not solve the LTE camping issue on international roaming as stated in original thread, infact the modem crashes so often on 2G/3G also (GSM/UMTS)
Anyone here from verizon/samsung who can pass on the message to relevant folks that there is a major issue which they have not addressed. I am surprised such a common bug was not tested before releasing offical binary for update !! #shame.
Any updates?
anirudhgargi said:
My S6 Edge SM-G925V worked perfectly back in India on Vodafone Band 3 LTE until marshmallow update. In the Nougat update verizon/samsung has some issue with their cellular firmware - after that i am never able to camp to any LTE network.
It was running smooth until the G925VVZW4CPD2 (6.0.1) update, all settings are ok. I tried the other popular network sim of JIO ( Band 40) that also is same. Bigger problem is that the modem crashes far too many times on the 2g/3G also. I can see the networks bar go and come in a loop again and again, making phone useless.
Verizon surely has messed something up with the latest 7.0 update, which they deny (have contacted them). There are couple of forums in Sammobile on the same. No luck with solution.
Just yesterday got one more update of 2GB which brings it to one update over 7.0. No luck. Still no LTE camping.
Do not suggest to check the APN settings i have checked they good. Anythings else or you also facing same issue ?
Can anyone show how to get the blocked service menu (via codes) working ?
Click to expand...
Click to collapse
Any updates on a solution for this? I finally got around to updating my G925V OTA with Verizon, and I've run into the same issue. I hope I don't have to roll back the update manually but I guess I might have to because I have searched for a solution everywhere and have tried everything but nothing works.
Exact same issue, modem crashes constantly (I'll have signal on H/H+ only, and then it drops. Signal comes back. Then drops), and I never get LTE.
Tried all the obvious solutions (e.g. reboot, factory reset, network reset, clear cache partition, boot into safe mode, reprovisioning from carrier, confiming IMEI with carrier etc.) but nothing works.
What did you guys figure out?
lorenzopromot said:
Any updates on a solution for this? I finally got around to updating my G925V OTA with Verizon, and I've run into the same issue. I hope I don't have to roll back the update manually but I guess I might have to because I have searched for a solution everywhere and have tried everything but nothing works.
Exact same issue, modem crashes constantly (I'll have signal on H/H+ only, and then it drops. Signal comes back. Then drops), and I never get LTE.
Tried all the obvious solutions (e.g. reboot, factory reset, network reset, clear cache partition, boot into safe mode, reprovisioning from carrier, confiming IMEI with carrier etc.) but nothing works.
What did you guys figure out?
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Click to collapse
waiting for the solution as well. But i rolled back to 5.1.1

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