Database Develop

[DISCUSS]All Nexus 5 3G issues here

Hello Guys. Nexus 5 has been here for a long time now but we are still eagerly waiting for some issues to be fixed by Google.
One of the major issues that people are facing is getting the phone in 3g mode.
Some users just can't select 3g in preferred network i.e. if they select 3g in preferred networks and press back button and again go to Mobile Networks menu, the preferred network would go back to 2g or LTE automatically.(I am not having such issue but my issue is mentioned below)
The bug I am facing on my Nexus 5 is that my phone can select the 3g preferred network and the settings do stick unlike the issue mentioned above but I get no service when the preferred network is 3g. There is no LTE in my country but 2g works fantastic! I tried my sim in my brother's Xperia P and he received full 4 bars in 3g mode! I tried his 3g enabled sim in my Nexus 5 and again no network when in 3g mode. This clearly shows that Nexus 5 is having something wrong. I don't know if this is hardware related or software but I want to get this thing fixed as soon as possible. I have even tried flashing stock firmware and selecting WCDMA only in the *#*#4636#*#* menu. Any suggestions?
Also, if anyone else is facing any 3g related problem, he/she may post here so that other users can help out! Peace :highfive:

MakDroid said:
One of the major issues that people are facing is getting the phone in 3g mode.
The bug I am facing on my Nexus 5 is that my phone can select the 3g preferred network and the settings do stick unlike the issue mentioned above but I get no service when the preferred network is 3g.
Click to expand...
Click to collapse
Almost the same. I could select 3g. It waits a bit or more to show up.
From time to time, I could barely use the internet.
I have no other phone to compare.
Best regards.

What gets me is low signal areas. It says "use a valid sim", when there is one. It goes to no bars and says "reboot". My Nexus 4 would just go down then up when the signal improved. Basically I have to reboot all the time. When im @ mine is great but I've 5 bars
From the wonders of mobile telephony.

on 3G: I get late notifications specially on whatsapp, they are like 10-15 mins late it's kinda irritating but I get instant notifications on 2G network.

What revision are you using?

ChristianLetti said:
What revision are you using?
Click to expand...
Click to collapse
Obviously it's rev_11, the only one that exists.

bblzd said:
Obviously it's rev_11, the only one that exists.
Click to expand...
Click to collapse
I was talking about the Firmware rev, KOT49H and stuff...

ChristianLetti said:
I was talking about the Firmware rev, KOT49H and stuff...
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Click to collapse
So 4.4.2_r1? I think we can assume he's using the latest version of Android as well.

bblzd said:
So 4.4.2_r1? I think we can assume he's using the latest version of Android as well.
Click to expand...
Click to collapse
Some ROMs are KOT49H and some are KVT49L

I'm on49L cm was on 49H.stock Same problems
From the wonders of mobile telephony.

3g reception issues
howard bamber said:
I'm on49L cm was on 49H.stock Same problems
From the wonders of mobile telephony.
Click to expand...
Click to collapse
Hi, I am also facing the same problem, no 3g, it seems this problem got started after I recently updated to Android 4.4.4_R2 KitKat (KTU84Q), so I rolled it back to previous version, still the problem persists, not sure what to do next, would appreciate any help
thanks

In my experience it's down to network. On Vodafone I had loads of issues with 3G refusing to connect whereas with 3UK I've not had a problem

Strange network issues

I have Mi5 32gb Indian variant used by my mother on Airtel 4G network in both sim slots
Off late, its not getting network most of the time unless I go to *#*#4636#*#* Menu and select LTE/CDMA/UTMS(PRL) wherein it gets 4G for sometime and then switches back to EDGE network and menu shows LTE/TD-SCDMA after reboot/ after idle for a while
Any ideas? Im trying to avoid hard reset but this phone worked fine for a year in the same setup so it cant be hardware issue I guess

Hello,
I have 4g issue too, always very good 4g signal display but trafic lte shutdown. Searching on xda and miui forums since few weeks but no answer found

same here

4G doesn't stay, always return to H+

Hello everyone,
I just bought a Oneplus 3T and it's a really good phone, but i'm facing an issue : 4G only appears a few time (with almost full bars) but it's just coming back to H+ every time, i mean every time.
Usually i have 4G in that place, even with my old ****y Samsung Xcover 3 and its the same with another phone operator sim card.
What do you recommend for me ?
Thank you very much
Details :
French version
Up-to-date (Android 8.0.0)
Phone operator : Sosh (tried B&YOU)

Fix
*#*#4636#*#* use the diagnostic under phone information and move it to 4g/lte only

I've seen this solution but it's not a real one, no ?
If I put LTE Only, i will not have 3G/H/H+ and stuff if there is no 4G around me, right ?

Perhaps your ISP radio tower is far away, doesnt mean its phones fault

I had some issues with sim. I've to get new sim and 4g service reactivated

Well, as i said before, i was able to have 4G even with my old Xcover3 in that place, so it's not the network provider's fault.
4G is working on my Oneplus 3T, it's just that it's most of the time, like MOST, on H+ and not 4G even if I had 4G in thèses places before...
It looks like he phone auto balance between 4G & 3G as soon as 4G is a little bit weak (even weak, it's still beter than 3G anyway...) and I noticed that sometimes the data are just turned down (nothing DL, charge, but H+ still on status bar).
Im on Oreo stock OOS, do you know if there is any issues on this new version ?

Strange switchs 4G (LTE) to H+

Hi,
I'm new in MI8 community ? (just living leeco lepro3 ). I've strange switchs between 4G to H+.
I explain ?. Previously, at home, I was all the time in 4G with my PRO3. But now, my MI8 switchs time to time and during the switch I loss the connection. Nevertheless, my device receives full signal in 4G and it stays connected on the same BTS.
If I set it in plane mode ON and after OFF...back to 4G for a short time...
I'm on miui10 and on Sosh (orange) french network.
Tks for your help

Hey !
I'm also french and i'm experiencing that kind of H+ switches, as you I had 4g in these areas before with my oneplus 3 with Bouygues Telecom ISP and now i can't even connect to the internet, must be the antennas...

I can connect to 4G but something doesn't work fine...I can't stay connected. The level of the signal increase and dicrease strangly.
I'm a little bit disapointed :crying:

Because each phone have different bands and if your phone doesn't have the right band for your area cell tower then it'll keep changing back to the most stable connection it can do.

Sure, I know that. But I leave in campaigne with only one BTS. So I'm always connected to the same antenna.
And if it was an issue with the frequency band (lepro3 has the same), switching OFF/ON, airplane mode should not fix my issue.
I've tested with Mate 20, and i'm always 4G in full power received !

Nobody else has the same issue ??

I have the same issue, 4g and H+ are switching all the time. Sometimes it keeps switching several times in a minute on a fixed location.
I am in Croatia, operator is A1, Mi8 Global model.

very well it seems like it's not an isolated bug. can we trace this kind of problem to xiaomi and if so by which channel?

Hi, i'm still facing time to time the issue. No fix planned? I'm not alone.

Zero promises here but you can try forcing the network mode to LTE/UMTS auto (PRL) and check if it makes a difference.
To Change 2G to 3G 4G LTE only network mode in Android Phone via USSD code, take the following steps:
Dial *#*#4636#*#* OR ##626* OR ##786# in your phone
Select Phone Information
If you have Dual SIM Select the Slot (SIM) you want change settings for
Scroll Down and select the Option Under “Set preferred network type”
Click to expand...
Click to collapse
Also works by pressing 5 x times on settings \ my device \ total storage

Thks but It's not a good solution. I won't force network type choice.

fufurax said:
Thks but It's not a good solution. I won't force network type choice.
Click to expand...
Click to collapse
If you flash 9.1.17 Xiaomi.EU they have updated Network Switching handover to European UMTS, instead of default chinese TD-CMDA to WCDMA as Stoffl_ says.
I had the same problem as you say of switching from LTE to H+ because of this. Either change it manually after boot or unlock the bootloader and flash another rom. Until they fix it in global, if they do.

najabi said:
If you flash 9.1.17 Xiaomi.EU they have updated Network Switching handover to European UMTS, instead of default chinese TD-CMDA to WCDMA as Stoffl_ says.
I had the same problem as you say of switching from LTE to H+ because of this. Either change it manually after boot or unlock the bootloader and flash another rom. Until they fix it in global, if they do.
Click to expand...
Click to collapse
I'm sorry but I don't understand... You talk about 9.1.17 > what is it (modem firmware)? It can fix my issue ?
I've the last update of miui, It's included un OTA update?
You have use it and fix the problem?

Just ****ing change the network mode ffs
Worst case you'll reboot and it'll reset to default
He's talking about a custom miui Rom yes

najabi said:
If you flash 9.1.17 Xiaomi.EU they have updated Network Switching handover to European UMTS, instead of default chinese TD-CMDA to WCDMA as Stoffl_ says.
I had the same problem as you say of switching from LTE to H+ because of this. Either change it manually after boot or unlock the bootloader and flash another rom. Until they fix it in global, if they do.
Click to expand...
Click to collapse
Stoffl_ said:
Just ****ing change the network mode ffs
Worst case you'll reboot and it'll reset to default
He's talking about a custom miui Rom yes
Click to expand...
Click to collapse
Ok, thanks I understand. I'll try. I'll keep you posted

fufurax said:
Ok, thanks I understand. I'll try. I'll keep you posted
Click to expand...
Click to collapse
So, after few month my feedback. I've try to force the switching of prefered type of network and it does not work. So I expected a new version of MIUI who can fix it...
Today, I'm in the lastest Miui 10.3.3.0 stable and the issue still

4G Suddenly became useless

Hello,
I am now having issue with my K20 Pro. I'm using 12.0.5 xiaomi eu
Not certain but possibly started after I upgraded to MIUI 12.
Issue is that the mobile data never works when signal is 4G/LTE.
Internet only works if you find a stable 4G+/LTE+ signal. The system would tend to constantly switch between 4G and 4G+.
Another option is to use 3G/H+ Preferred option. H+ works fine but as we all know this is the older network which means slower but decent data
I have read some solutions to delete and reset your APN. But it never works either. Also compared the network behavior between other phone like Oneplus 5T and it doesn't have the issue even using the same network and same location.
I'm not sure if this has been raised to Xiaomi directly. But I'm hoping there's a fix for this.
Thank you!!

peeweew said:
Hello,
I am now having issue with my K20 Pro. I'm using 12.0.5 xiaomi eu
Not certain but possibly started after I upgraded to MIUI 12.
Issue is that the mobile data never works when signal is 4G/LTE.
Internet only works if you find a stable 4G+/LTE+ signal. The system would tend to constantly switch between 4G and 4G+.
Another option is to use 3G/H+ Preferred option. H+ works fine but as we all know this is the older network which means slower but decent data
I have read some solutions to delete and reset your APN. But it never works either. Also compared the network behavior between other phone like Oneplus 5T and it doesn't have the issue even using the same network and same location.
I'm not sure if this has been raised to Xiaomi directly. But I'm hoping there's a fix for this.
Thank you!!
Click to expand...
Click to collapse
I dont know if its exactly the same issue I had , but I give you my solution , it might solve your problem as well :
1. download Activity Launcher from the playstore.
2. Open it and search "miuiBand"
3. Choose the network LTE band of your Operator(look it up in google) for example LTE B3 (if you use only 4G , look at LTE and not LTE Preffered)
4. Toggle Selection ON (Top).
Hope this solves your issue as it did mine.

urbanmec said:
I dont know if its exactly the same issue I had , but I give you my solution , it might solve your problem as well :
1. download Activity Launcher from the playstore.
2. Open it and search "miuiBand"
3. Choose the network LTE band of your Operator(look it up in google) for example LTE B3 (if you use only 4G , look at LTE and not LTE Preffered)
4. Toggle Selection ON (Top).
Hope this solves your issue as it did mine.
Click to expand...
Click to collapse
I have this. However, I can't understand why it suddenly changes reverts from time to time. Do you always take a look at it whenever connecting to Mobile Data?
As I also check in Network Cell Info Lite, phone still connects to the band causing the problem (Band 21)

peeweew said:
I have this. However, I can't understand why it suddenly changes reverts from time to time. Do you always take a look at it whenever connecting to Mobile Data?
As I also check in Network Cell Info Lite, phone still connects to the band causing the problem (Band 21)
Click to expand...
Click to collapse
When you get low coverage or restart the phone or get out of plane mode , your network settings go back to default (band will be chosen automatically), but forcing the prefered network type ,you will prevent this from happening (you will only have to worry about restarts /phone / modem).
Making the choice permanent IS possible with root (Check this Link : https://forum.xda-developers.com/ge...ific-network-bands-snapdragon-t3744243/amp/).

urbanmec said:
When you get low coverage or restart the phone or get out of plane mode , your network settings go back to default (band will be chosen automatically), but forcing the prefered network type ,you will prevent this from happening (you will only have to worry about restarts /phone / modem).
Making the choice permanent IS possible with root (Check this Link : https://forum.xda-developers.com/ge...ific-network-bands-snapdragon-t3744243/amp/).
Click to expand...
Click to collapse
Btw, I cannot get Network Signal Guru to work with Magisk v21.1 anymore
Mi 9T (not Pro), tried with EEA stock MIUI 12.0.3 and Xiaomi.eu stable 12.0.6.
Last time it worked for me on EEA 12.0.2 with Magisk v21.0
I tried now that Samsung Band Selection app., it complains that hidden activity is not found (on my Xiaomi.eu 12.0.6) and it cannot open band selection options
But I don't have a problem with bands, just curious to tesr the things?

Bought a Xiaomi Redmi note 9s last month for Christmas for myself.
It had MIUI 12.0.2 on it by default.
Played around with it for a whole month and everything was working perfectly...4g LTE included.
I don't have internet at home so I use my phone has a hotspot.
Average download speed was 60 megabits per second.
... Until I upgraded to 12.0.3, I then lost LTE and only connected using H+
So beware before upgrading because I have not found the solution yet other than flash with pixel experience ROM.
Edit :
Changing Network detection from automatic to manual fixed it !
My Redmi notes "global" phones 4 & 5 had to flash new ROM to unlock bands.
Hope this helps

I realised that this issue is most likely due to baseband limitation with our Network provider. Given that I'm using a China Variant, the basebands my phone is lacking needed basebands here in the Philippines. What I'm looking for now is a QPST guide for SD855 to activate at least base band 20. I can't find any that has enabled it thru QPST yet.