Poor network on jio sim or any sim try this mode with band selection

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Thanks Meter: 58
By shabbir143, Member on 20th March 2020, 07:15 PM
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Network problem Or Poor Network on Jio

If you are facing problems of poor natwork whatever network on are u there is something for you to get Best network coverage

There are money tips n tricks are making round all over the internet
I'm also the one of them who has searched n searched on google about jio network

Than i found artical about network band
Band 3(1800)
Band 5(850)
Band 40(2300)
All above all are Lte band is jio provide to us
In my case I'll always get band 40 it's slowest band in my area why beacuse a phone automatically switches between band according to the strength of the signal in different locations

So 1thing i know that i have to control my network band or lock band 40
Than i searched and searched on google
I have read lot of article about changing your band easily
Read about different code for different mobile

For example *#*#4636#*#* or phone info to select network mode lte only nothing change same result

Than shortcut master to creat "service menu" or "Engineering mode" still no luck with different 2 device

Than *#001# it's work but can't change or lock anything

Than i finally found on Xda a magical code *#2263#
this is really magical code for Samsung devices
If it is work for you than you don't need any apps or U don't need to root your phone

Stil no luck
It doesn't work on my phone
Than searched about how to make this code to work i found small artical on xda and it's work

But you need root to access system file this guide is not work for non-rooted samsung phone

i have just tested on my s7 cutome rom of kill-switch black diomaond v7

So u need esfile explore
To perform this action

In Esfile explore goto
System/csc/etc Or System/omc/INS itc
Now look for the file name with
INS_keystrings.dat and rename it to something like xyz.keystrings.dat

Now go back to System/omc/XXV/etc and copy the xxv_keystrings.dat and paste the same where u have change file name
Omc/ins/etc and rename it INS_keystrings.dat now reboot phone

And U will see *#2263# code will stated to run
Now u can chhose any band you want or lock any band which u don't want

Note:-- what if you dont have xxv or sin csc than you look for xxv or sin csc and flash it
I think it will work without above trick but it doesn't than do it manually
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band 40 band 3 and band 5, band selection, jio netwrok problem, poor network, s7 band change

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