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my Capative is Netowrk lock (ON)

my Capative is Netowrk lock (ON)
i buy this from ebay
to unlock it and use in other netwrok.
but found this
how can i solve this?
dose this mean i canot unlock at at all?
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Galaxy S Unlock in Android Market.

HI, i unlock it now...
but when ever i try to make call..it drop
as i know this is full band mobile
will work on any network
i check it is it on automatic network.
some time it dail...but other not
and there is no option to change the netowrk from 3G to 2G

by using *#2263#
i found it dose not work on WCDM where i am
even if it was on auto
when change to GSM it worked.
any clue for this issue?>

What network are you trying to use?
Captivate has the following bands:
GSM/EDGE 850/900/1800/1900
UMTS/HSPA (WCDMA) 850/1900/2100
Note the absence of WCDMA 1700 for TMobile USA.

am on GSM 900/1800
WCDM 2100
when am on 2100. i can recive call
but canot make calls

any help?
why i can recive but canot make call on WCDM only

any one????????

Excessive bumping is highly unnecessary. If we knew and could substantiate an answer, we'd have told it to you already.
The only advice I can give is for you to force WCDMA2100 only via service mode through *#(*#)2263#(*#*). The additions to that code in parentheses is for CM7.
This is a total guess; I really don't know how to help you. Try different modems if this fails? Since it looks as if you have a Captivate ROM, make sure you only use an i897 modem, otherwise you'll break Bluetooth.

T-mobile and att network not compatable for 3g data. You can make calls but you will only get EDGE speed data.

[Q]Mobile network problem during searching carrier.

Hello i didn't find anywhere similar problem. I have N5, rooted and with stock rom & kernel, i have a problem with mobile network. In my country there is a network "Play" and it is using own transmitters or from other networks and it is working as roaming network. When i want to find other compatible carriers from menu (manual mode) searching took so much time, more than few minutes. There is a sollution for this? Or fix?
Same situation when i switch from 2G to LTE mode - same results.
Best regards g1b50n

I don't think you can just switch carriers from the network menu. You need their sim card to use them. "Roaming" is usually just automatic, if you have it enabled in setting.
You don't click on different carriers to roam. At least I've never heard of that. To use a carrier, you need their sim and APN settings.
Call your carrier and ask about it. They should know exactly how it should work.

In my country carrier "Play" allow to use other networks. I mean a problem when i want to find other carriers
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Then took so much time to find other networks.
I can connect with all of them (only orange not working cause was for testing)
Just want to know why looking for other networks take so much time.

Sorry, never heard of it....so can't guess why.
It probably falls under the" it is what it is" category.

No service - Emergency Calls only - Nexus 5 D821 in France

Hi,
Hi
A friend of mine have lost signal on his nexus 5 since Thursday 6 October 2016.
I have noticed the phone took a security update of the 05 October.
The sim is recognized. I tried with my own sim too.
The apn settings is good according to the provider website.
The imei is present.
When i search network operator, he take one minute at least and find my operator but afet that he i pick him i have the message "can't connect to this network riht now. Try again later"
I tried to flash a precedent stock version but no signal.
I tried to flash the modem too (downgrade) and no change
My last option is i have noticed that when i tap *#*#4636#*#* on the phone, i can select radio band and after that i see "usa band" but i'm in france.
In France we use GSM 900 and also LTE (4G)
I tried to flash the cyanogen last version and i see a change but still no service, no signal.
The change is i can see usa band + japan band now but no Europe band (if that exist).
It's look like those settings are decided by the rom or by the kernel (but not the modem firmware)
If someone in France or Europe can tell me if he has Europe band in select radio band, that would help me to understand better
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More picture here
https://imgur.com/a/cQ2kl
https://imgur.com/a/v7pLP
https://imgur.com/a/UdU3Y

Try this method:
http://forum.xda-developers.com/google-nexus-5/general/radio-enable-lte-band-3-nexus-5-d820-t2928561
If it fails, also try this one:
http://forum.xda-developers.com/cro...m-updating-t2871269/post55321344#post55321344
Sent from my Nexus 5 CAF using XDA Labs

Thanks.
I just tried both method.
Though now i have access to euro band, the phone still stay in no service... very weird.
I suppose it's an hardware trouble finally.
Thanks anyway, i give up ^^

How to change band radio

Hi everyone,
my used xperia xz have signal/network issue: when 4G is on and i receive a call the signal is so low that i have to move around or turn off lte to have a better experience; data signal is so low and laggy, sometime havent signal indoor etc... I bought a used device, originally come with UK firmware and this specs:
Android 8.0
Phone Software Version: 1302-9157_41.3.A.2.171
Global-LTE3A
Generic-41.3.a.2.171
S1 Boot version: 1299-4832 S1_BOOT_MSM8996_LA2.0_O_204
BASEBAND: 8996-8996.gwn.prodQ-00070-40
Customization version: 1305-7307R8E
After a guide of Kuarinfou to flash a firmware i flashed an italian firmware (cause i live in italy and i thinked to could solve it flashing an italian fw) but the signal/network issues are still there. I checked the service menu and I notice that:
- in the network preference's list there isnt the option "LTE/UMTS/GSM" but only LTE/UMTS or LTE/CDMA or LTE only or CDMA only and others combinations
- in the "select band radio" (the first option after clicking the three dots at the top) there are only 3 option: Automatic - America - Japan. NOT Europe!!!!
So I suppose this could be the reason of the issue. I suppose there is a network "limitation" about frequencies.
My questions are:
1) Could be that the reason of the issue?
2) Is there a way to change the band radio?
3) Is there a way to set on europe band and disable US or other bands?
I have read the post about how to modify lte carrier aggregation, could be the solution?
I will attach a screenshot for more info.
Hope in your experience and kindness.
Anyway, thanks you for the attention
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https://imgur.com/gallery/vVgYJb9

5g and Volte/ vowifi

hi everyone,
so i have had working 5g and volte/ vowifi for a while but last week i changed to euro build as someone said it would be better for australian network. anyway i have lost everything. i called optus ( carrer and they did a reset and made sure everything is enabled on their end.) i have flashed global back and still no luck. i have made sure everything is enabled via pdc and qualcomm applications. does anyone have any ideas?

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Hello!
First of all i would check that you have VoLTE enabled both in settings and in EngineerMode menu.
Also check that network type set to smth like NR/LTE/TDSCDMA/GSM/WCDMA and reboot phone.
If after reboot volte and 5G still don't work for you, you'll have to use QPST and PDC, to check what carrier profile is active in your phone now. It happens sometimes, that after firmware update, it resets to default or that, which not fully supported in your country.
As of your screenshot, it clearly says you have Telefonica_UK_Commercial profile active on both slots (sims).
If it is not the right profile for your current country/carrier, you'll need to deactivate it by choosing deactivate on sub0/sub1
and then choose the right profile for your carrier from the list, choose activate it on sub0/sub1, press activate button at the bottom of screenshot, swith off and switch on your phone (not reboot, because sometimes settings and not applied on reboots).
P.S: If you don't happen to find your carrier on the list, it's not a big issue. You can choose and enable the one that is available in your country with VoLTE (and 5G services), in many cases it will work too.

Where do I learn how to use this PDC tool. Does it require root? I have rooted and can do ADB.