4G not active on Sim slot 1 - Xiaomi Redmi 8 Questions & Answers

I am on stock MIUI 12 ROM right now and it is all working fine except that my 4G/LTE isnt working in Sim Slot 1 anymore. it is only connecting to HSPAP.
I then tried putting the SIM Card in my mothers phone to check if i could get a 4G signal there and it immediately did, so i am certain its either a problem with my Redmi 8.
Strange thing as well is that i tried putting the SIM in the second slot of my phone and somehow it does get 4G/LTE connection when i have it in slot 2.
I already checked if the APN settings. Anyone else having this problem, because i couldnt really find anyone else with a similar problem.
Im afraid my 1st SIM Slot just got broken somehow
Can anyone help me fix this?

Tauseef786 said:
I am on stock MIUI 12 ROM right now and it is all working fine except that my 4G/LTE isnt working in Sim Slot 1 anymore. it is only connecting to HSPAP.
I then tried putting the SIM Card in my mothers phone to check if i could get a 4G signal there and it immediately did, so i am certain its either a problem with my Redmi 8.
Strange thing as well is that i tried putting the SIM in the second slot of my phone and somehow it does get 4G/LTE connection when i have it in slot 2.
I already checked if the APN settings. Anyone else having this problem, because i couldnt really find anyone else with a similar problem.
Im afraid my 1st SIM Slot just got broken somehow
Can anyone help me fix this?
Click to expand...
Click to collapse
Due to my understanding, on some Xiaomeme devices, 4G/LTE only active on 1 SIM slot ( 1 or 2 depends ). It may miss-understanding with the Dual stand-by which show the ability of giving both SIM slots to be active at the same time.

LinhBT said:
Due to my understanding, on some Xiaomeme devices, 4G/LTE only active on 1 SIM slot ( 1 or 2 depends ). It may miss-understanding with the Dual stand-by which show the ability of giving both SIM slots to be active at the same time.
Click to expand...
Click to collapse
My mobile support dual 4G that allow 4G connectivity on both Sim slots. I have been using 4G on both SIMs before.

Tauseef786 said:
My mobile support dual 4G that allow 4G connectivity on both Sim slots. I have been using 4G on both SIMs before.
Click to expand...
Click to collapse
Then u may try Reset network settings, sometimes it helps

LinhBT said:
Then u may try Reset network settings, sometimes it helps
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Click to collapse
I try this and also i flash a new ROM but problem not solved

Related

[Q] Please help! Sprint One sim unlock, Always No service and won't auto reconnect

For the last weeks.. I have been trying to get this phone working with T-Mobile..I had unlock the sim card and now running badboyz 4.3 rom. 1.3
After unlocking the sim card and setting up the apn, selected T-Mobile from the available networks and it will connect. But when I go to work, I will lose signal every few block, and need to search for available network again and wait to select t mobile again.
I had try to use the t mobile sim card on my old phone and everything will works fine with no signal lost.
Can anyone please HELP!... I been searching and looking for an answer for more than 2 weeks..but no resolve.....
Thanks
Sim Unlock
lazybozz said:
For the last weeks.. I have been trying to get this phone working with T-Mobile..I had unlock the sim card and now running badboyz 4.3 rom. 1.3
After unlocking the sim card and setting up the apn, selected T-Mobile from the available networks and it will connect. But when I go to work, I will lose signal every few block, and need to search for available network again and wait to select t mobile again.
I had try to use the t mobile sim card on my old phone and everything will works fine with no signal lost.
Can anyone please HELP!... I been searching and looking for an answer for more than 2 weeks..but no resolve.....
Thanks
Click to expand...
Click to collapse
How did you get the SIM unlocked in the first place?
lazybozz said:
For the last weeks.. I have been trying to get this phone working with T-Mobile..I had unlock the sim card and now running badboyz 4.3 rom. 1.3
After unlocking the sim card and setting up the apn, selected T-Mobile from the available networks and it will connect. But when I go to work, I will lose signal every few block, and need to search for available network again and wait to select t mobile again.
I had try to use the t mobile sim card on my old phone and everything will works fine with no signal lost.
Can anyone please HELP!... I been searching and looking for an answer for more than 2 weeks..but no resolve.....
Thanks
Click to expand...
Click to collapse
This is probably because T-mob covers only particular places the frequencies this phone uses http://theunlockr.com/2013/07/05/htc-one-sprint-specs/ vs t-mob https://t-mobile.jive-mobile.com/#jive-document?content=/api/core/v2/documents/4988
Sent from my HTCONE using Tapatalk
Is there any solution for this problem ?
Is there anything I can do to fix this problem ? (different rom or radio...etc..) Or I have to give up the phone... Cause it is too much headache to "searching for network" all the time and miss all the call with no service on the phone without knowing..
Thanks
lazybozz said:
Is there anything I can do to fix this problem ? (different rom or radio...etc..) Or I have to give up the phone... Cause it is too much headache to "searching for network" all the time and miss all the call with no service on the phone without knowing..
Thanks
Click to expand...
Click to collapse
well, I am not an expert on the tmobiles network, but going by what lazybozz, said, I seem to remember tmobile using different bands than the other carriers, so what you may be experiencing, is the phone being in the vicinity of multiple towers, but not all of them are within the band that the phone supports. So its like the phone doesnt even see those towers. On a side note, this issue caused alot of chaos for those who unlocked iphones about 3 years ago, they could use EDGE on tmobiles network but not 3G, so i assume this is a similar situation. So long story short, yeah you probably cant fix the problem, unless you get a quad band phone. I could be wrong, but it does sound like a logical reason for the issue you are having.
as elvisypi said above, Its the freq that T-mobile operates on in that area. If your getting T-mobile at all in the states then you have already flashed a radio. However flashing any other radio is not going to give you the freq that tmobile uses, Its not a software limitation its a physical hardware limitation.
Thanks for your reply, do you know any app out there that monitor and alarm you when the network or signal is lost ? That works with 4.3 ?That way at least you know the phone is offline ... some of the apps I tried is anything at all ...
Thanks
Have you tried an app like tasker? Its essentially an automation app. It isnt jist for your use. Its for many different functions. Jist look on the app store for tasker. That might help
Sent from my HTC Butterfly s using Tapatalk

Note 5 at&t emergency calls only issue.

Hello. About a 4 months ago i have bought from eBay a note 5 at&t version. I live in Greece and my network operator is WIND GR. The phone works fine but from time to time i get an emergency calls only message. And i can't get and do a phone call. If i restart the phone everything goes to normal. Sometimes it goes on and off by itself (the problem).
Have been anyone experiencing the same issue? If the phone is incompatible with my network operator should it not work at all?
Did you tried to change the sim card? Maybe issue is from sim or from sim slot
johnny.goldy said:
Did you tried to change the sim card? Maybe issue is from sim or from sim slot
Click to expand...
Click to collapse
My sim is new. When i purchased the phone i have changed my old sim with a new sim 4g compatible.
It happened again. And i am missing calls like this. I will smash it with a hammer
Go to settings, backup and reset, then reset only network settings, see if any better signal
johnny.goldy said:
Go to settings, backup and reset, then reset only network settings, see if any better signal
Click to expand...
Click to collapse
Done that right now. Tomorrow i will get a new sim card and i will post if anything gets better. Thanks for the help.
Update of the situation. I have changed sim card 2 times. It still happening. My phone runs at nougat now and the problem still appears as before at 5 and 6 Android version. I currently gonna change service provider that has better and stronger signal. From what i have discovered. When the phone looses signal due too poor service provider signal sometimes it can't register to network by itself. If i enable airplane mode and then turn it off it comes back. Any clue? If it's hardware issue what can i change?
Should i have at the mobile networks auto detect or manual and my carrier?

[RROS v5.8.5] Che2-L11 Kirin 620 - Sim Cards not detecting!

So basically I have a phone purchased from UAE which I brought to India. I am using Jio 4G and BSNL 2G in SIM 1 and 2. So here's what happens:
When I have Jio in slot 1 and BSNL in slot 2: No sims are detected
When I have ONLY Jio in slot 1 or 2: It detects it in both the slots
I also keep getting these Mobile Broadcast messages (even when I disabled every single one of them in the settings). I cannot read them because they're in a different language. THIS IS CAUSING A MAJOR SPAM ISSUE.
PICS: https://imgur.com/a/drkox
What should I do to get the SIM cards to work? I believe this is an issue of region locking or registration or something like that.
Thanks.
Sim card needs to be able to support 4G or it won't work. But you don't need to have 4G connection, just sim that's capable for it. I believe that's the problem.
keikari said:
Sim card needs to be able to support 4G or it won't work. But you don't need to have 4G connection, just sim that's capable for it. I believe that's the problem.
Click to expand...
Click to collapse
It does. I have a Jio 4G sim in it. Also, I keep getting Mobile Broadcast messages with the location of the cell tower and some in an unknown language.
ngrpthomas said:
It does. I have a Jio 4G sim in it. Also, I keep getting Mobile Broadcast messages with the location of the cell tower and some in an unknown language.
Click to expand...
Click to collapse
Both sim cards need to be able to support 4G. I don't know about those messages, I've never had any.
keikari said:
Both sim cards need to be able to support 4G. I don't know about those messages, I've never had any.
Click to expand...
Click to collapse
I added some pics. Check the original post.
Bump. Help someone? Please.
ngrpthomas said:
Bump. Help someone? Please.
Click to expand...
Click to collapse
Have you tried to swap your BSNL sim to 4G capable sim like I suggested. At the moment that's probably only solution, until you have confirmed it doesn't fix it or that your BSNL sim already is 4G capable.
keikari said:
Have you tried to swap your BSNL sim to 4G capable sim like I suggested. At the moment that's probably only solution, until you have confirmed it doesn't fix it or that your BSNL sim already is 4G capable.
Click to expand...
Click to collapse
I don't even want the BSNL sim in that phone anymore. I just wanna use Jio 4G without the annoying mobile broadcast. Please find the screenshots on the main post.
ngrpthomas said:
I don't even want the BSNL sim in that phone anymore. I just wanna use Jio 4G without the annoying mobile broadcast. Please find the screenshots on the main post.
Click to expand...
Click to collapse
Check Messaging->Settings->Advanced->Wireless Alerts->Settings Maybe you can disable them there.
keikari said:
Check Messaging->Settings->Advanced->Wireless Alerts->Settings Maybe you can disable them there.
Click to expand...
Click to collapse
It doesn't work!

TMobile Signal Issues Android 9 Pie

I wanted to see if anyone else had issues with their signal for tmobile and after updating to android 9. I am running into an issue where for a few days I would have LTE 4G signal but at some point, I would lose signal completely. This issue persists once every one to two weeks. Here are the steps I did to see if it would resolve the issue:
- Reset Network Settings
- Reconfigured the date & time so it would be the correct time and date and timezone
- Removed automatic set date and time
- Did both a soft and hard reset
- Cleaned out system cache
- Booted into safe mode
- Checked the service hidden menu and ran tests and all came out pass
- Reset Access Point Names
- Ran Search Networks in Network Operators Menu and failed
- Ran Select Automatically in Network Operators Menu and failed
This issue has been annoying ever since I updated to Android 9. If anyone has a solution please advise. My phone is not rooted and is stocked image.
I'm on Tmo and received the pie update some months ago. I haven't had any issues with signal strength since. I'm racking my brain trying to come up with some advice but wow you have some everything I can think of. How about trying a new SIM card?
Medevac1 said:
I'm on Tmo and received the pie update some months ago. I haven't had any issues with signal strength since. I'm racking my brain trying to come up with some advice but wow you have some everything I can think of. How about trying a new SIM card?
Click to expand...
Click to collapse
I actually did replace the SIM card. Here is the weird thing... When I removed my sim card, I would get the icon showing that there is no sim card inserted so of course no signal was showing. After inserting the new sim card, the phone would see and recognize the sim card but still no signal bars would be showing.
KieKazami said:
I actually did replace the SIM card. Here is the weird thing... When I removed my sim card, I would get the icon showing that there is no sim card inserted so of course no signal was showing. After inserting the new sim card, the phone would see and recognize the sim card but still no signal bars would be showing.
Click to expand...
Click to collapse
Turn on Roaming?
Ainz_Ooal_Gown said:
Turn on Roaming?
Click to expand...
Click to collapse
Roaming has been turned on and off then on again yet same results with signal being lost.
KieKazami said:
Roaming has been turned on and off then on again yet same results with signal being lost.
Click to expand...
Click to collapse
Download this app, "LTE Discovery" https://play.google.com/store/apps/details?id=net.simplyadvanced.ltediscovery
There's a feature that logs your LTE data, wait till you lose signal again and then review the logs.

can't connect to 4g on sim1 in sim2 working perfect

can't connect to 4g on sim1 in sim2 working perfect is this a hardware problem? How to solve this!
sumanth9999 said:
can't connect to 4g on sim1 in sim2 working perfect is this a hardware problem? How to solve this!
Click to expand...
Click to collapse
If you are trying to use 4G in both sim at same time, then le 2 doesn't support it. Only one sim will work on 4G at a time. To switch sim 4G network change data access for sim. If its not the problem. then it might be hardware issue. provide more detail.
Help
Hi i have a x526. Everything works fine but issue is whenever i restart my device almost everytime device doesnt detect my sim and says no sim card inserted , for it it to detect my sim card either i have to restart it 3-5 times or to remove the sim tray and insert it again and again till it shows me sim inserted ....its been 4-5 months i am doing this dont know any solution , i dont remember after installation of which rom this started....i am currently on 10 ancient , i have tried eui stock ,pie, Q , every rom but this problem doesn't solved ...HELP

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