Database Users

Redmi 3s Mayor issue continuous drop to 2g Network with full coverage 3g/4g

Hi all,
I have a redmi 3s, i have a major issue with this phone with one sim configuration
Signals drops from 4g/3g to 2g (edge) with minimal drop of signal. With other mobiles no drop of signal, stay at 4g/3g continuously. Then the mobile takes forever to recover from 2g to 3g/4g at a full coverage of 3g/4g. The configuration at the mobile is preferred LTE. I have tried with other mobiles and the coverage it is fine. With other sim providers and I have same problem.
I am looking for any trick for fix the network mode. I have tried different programs from google play and modifying the build.pro, exposed but the networks mode comeback if you reset the phone or change from air plane mode.
Any ideas?
Thanks and regards

Fix for MIUI 8
Look here or here

Different issue. it is described here:
http://en.miui.com/thread-320293-1-1.html
The workaround is to enable GPS (for example open Maps), the phone will return to 3G.

Turns out, I'm not the only one facing this problem. From the above post, having 2 SIM card active will fix this problem. Too bad I don't have second SIM.
Sent from my Redmi 3S using XDA-Developers mobile app

Can i unlock band5(850mhz) in my redmi 2 prime

Plz guide me to to unlock band5 in redmi 2 prime in my location band 5 is selected but my phone doesn't have unlock band 5 thats why i am getting so poor Network coverage plz can anyone help me

i too need this question's answer as we knows QC SD410 supports 2100Mhz & 850Mhz also but not enabled in redmi 2.
i tried with the QXDM tool messing with the NV values
as Vodafone only supports band 1 (2100Mhz) & surprisingly Dazen 1 having same Soc gets the 4G network of Vodafone but in redmi 2 it shows only 3g .
I tried to copy the dazen 1 nv values but still no luck.
it needs some more stuff to unlock the bands & m pretty sure its possible but dont know how

No Lte connection

Hi everyone
So I've had the mi a1 for a couple of days and so far have not been able to connect to lte network. 3g is working. Apn is set and configured correctly. This is in areas where my Redmi 4x, previous note 4x and all other devices connect to lte networks (same sim card obviously). I have the global version and have immediately installed the September update after setting up the device. I suppose no-one else has issues with lte, otherwise I would have found a thread about it? Are there any suggestions what I can do to find out what the problem is? I tried an app to force lte only but it doesn't connect to a network when set to lte only.

Nevermind. Restarting and cycling through 2g/3g/4g options in mobile network menu resulted in 4g connecting. Still a bit odd though as I'd cycled 3g/4g before and only connecting to 3g signal. Restarted once after the update as well.

mobile bands lost sim cards not working in redmi 4 prime

last night I tried to switch to another lte band by dialing *#*#4636#*#* , I don't know what band I chose , now no 2g or 3g bands and just one sim card works at a time and the one works only on LTE band, so since my operator doesn't offer volte I can't make calls and even receive messages. I found the proper qcm file and flashed it with qpst software successfully but nothing happened. any one have an idea what to do?

Data onnection issue

I'm in Italy (European Union) and i have redmi 3s NOT global edition.
From like 2 weeks when i turn on the phone the data connection crashes within 10 minutes.
From like 9 months i can't connect to 4G but only H+, H or E, and only with H+ I'm actually connected, because others don't work but only shows the symbol.
If i use the same SIM in another not global xiaomi phone (i tried the redmi 4a) the same thing happens.
If i use the same SIM but in another global phone, that has the european frequencies, i can use data connection normally.
Could it be that Telecom Italy blacklisted me?
Or my phones that does not have the frequencies that they want, idk