Roaming even though in home network

[Guest urbanCee]

Hi all!

I bought a ZTE blade in austria (hofer) with a yesss card.

as soon as i install a custom ROM (i tried Finnish Fillyjonk RLS4 and Sebastian404's de-orangeated-rom - r7) i get the info, that i am "roaming" even though i am in my base network. (the little R in the top where the connection qualitiy is)

i use a yess card and i am in the base network for it. the APN is also entered correctly. i didn't have this problem with my stock firmware.

[Guest Dima_2005]

Is Yesss a subprovider of an original network?

Then it's 100% normal. It's on the home network, but sees it as roaming because the orginal name differs of the name on the SIM.

It's on most phones, not only ZTE Blade.

[Guest urbanCee]

Is Yesss a subprovider of an original network?

Then it's 100% normal. It's on the home network, but sees it as roaming because the orginal name differs of the name on the SIM.

It's on most phones, not only ZTE Blade.

yes, it is! thx for the info ...

this hower means, that i have to be careful on the border to another coutry, because it can just as well log into a roaming network and since data roaming is allowed this can be pretty expensive!

[Guest Phoenix Silver]

yes, it is! thx for the info ...

this hower means, that i have to be careful on the border to another coutry, because it can just as well log into a roaming network and since data roaming is allowed this can be pretty expensive!

you can just toggle off the option which permit the roaming no ?

[Guest urbanCee]

you can just toggle off the option which permit the roaming no ?

no, because then i don't get mobile internet access in my native network

[Guest theInquisitor]

Android phones declare a network as a roaming network if the MCC/MNC differs from the first digits of the IMSI (which starts with the MCC/MNC of the issuing operator). Yesss have their own MNC (232-12) allthough they don't have their own radio network and so their SIM cards' IMSIs start with 232-12 while the underlying radio network (Orange) has the MCC/MNC 232-05.

Perhaps you can tweak Android somehow so it will consider 232-05 your SIM's home network. In the APN settings you can also define the MCC and MNC somewhere near the bottom - have you tried changing values there? Maybe that could help. Otherwise you will need some experts help to find the responsible piece of code in Android.

[Guest urbanCee]

Android phones declare a network as a roaming network if the MCC/MNC differs from the first digits of the IMSI (which starts with the MCC/MNC of the issuing operator). Yesss have their own MNC (232-12) allthough they don't have their own radio network and so their SIM cards' IMSIs start with 232-12 while the underlying radio network (Orange) has the MCC/MNC 232-05.

Perhaps you can tweak Android somehow so it will consider 232-05 your SIM's home network. In the APN settings you can also define the MCC and MNC somewhere near the bottom - have you tried changing values there? Maybe that could help. Otherwise you will need some experts help to find the responsible piece of code in Android.

hmm ... i'll try that. thx

however i still don't understand why it works with the stock firmware even if i use a bob card (that is another provider, that operates on another network),

[Guest theInquisitor]

however i still don't understand why it works with the stock firmware even if i use a bob card (that is another provider, that operates on another network),

If my proposal of changing the MNC in the APN settings actually works, then the original firmware may have had Orange's MNC preset. If it does not work, then the Austrian firmware may have been tweaked (which would be of help to find that tweak), so it identifies the native network for Austrian MVNOs.

Regarding bob they perhaps don't use their own MNC anymore - you can check that under menu -> settings -> about phone -> status

example shows an IMSI startng with 310260 where 310 stands for USA and 260 for T-Mobile. For a comprehensive list of MCCs/MNCs see http://en.wikipedia.org/wiki/Mobile_Network_Code

Allthough some operators have their own MNC, they perhaps don't use it. E.g. German MVNO vistream stopped issuing SIMs with their own MNC (262-16) last year and use the MNC of the underlying radio network (eplus 262-03).

Edited December 25, 2010 by theInquisitor

[Guest urbanCee]

If my proposal of changing the MNC in the APN settings actually works, then the original firmware may have had Orange's MNC preset. If it does not work, then the Austrian firmware may have been tweaked (which would be of help to find that tweak), so it identifies the native network for Austrian MVNOs.

Regarding bob they perhaps don't use their own MNC anymore - you can check that under menu -> settings -> about phone -> status

example shows an IMSI startng with 310260 where 310 stands for USA and 260 for T-Mobile. For a comprehensive list of MCCs/MNCs see http://en.wikipedia.org/wiki/Mobile_Network_Code

Allthough some operators have their own MNC, they perhaps don't use it. E.g. German MVNO vistream stopped issuing SIMs with their own MNC (262-16) last year and use the MNC of the underlying radio network (eplus 262-03).

interestingly enough the IMEI in my phone starts with 353-16, which i cannot find anywhere on that list. very strange.

[Guest Phoenix Silver]

If my proposal of changing the MNC in the APN settings actually works, then the original firmware may have had Orange's MNC preset. If it does not work, then the Austrian firmware may have been tweaked (which would be of help to find that tweak), so it identifies the native network for Austrian MVNOs.

Regarding bob they perhaps don't use their own MNC anymore - you can check that under menu -> settings -> about phone -> status

example shows an IMSI startng with 310260 where 310 stands for USA and 260 for T-Mobile. For a comprehensive list of MCCs/MNCs see http://en.wikipedia.org/wiki/Mobile_Network_Code

Allthough some operators have their own MNC, they perhaps don't use it. E.g. German MVNO vistream stopped issuing SIMs with their own MNC (262-16) last year and use the MNC of the underlying radio network (eplus 262-03).

is it normal ?

i don't have IMSI in the list

(just to know phone works without problem)

[Guest theInquisitor]

interestingly enough the IMEI in my phone starts with 353-16, which i cannot find anywhere on that list. very strange.

Are you mixing up IMSI with IMEI? IMSI is the SIM cards identity, while IMEI is the phone's serial number. Perhaps the OSF won't display the IMSI in the settings, but I'm sure there's an app for that. Since I don't have my Android at hand I can't tell you if there's an app on the market, but if not I could write one.

[Guest Phoenix Silver]

Are you mixing up IMSI with IMEI? IMSI is the SIM cards identity, while IMEI is the phone's serial number. Perhaps the OSF won't display the IMSI in the settings, but I'm sure there's an app for that. Since I don't have my Android at hand I can't tell you if there's an app on the market, but if not I could write one.

no no lol

i have IMEI

IMEI SV

Wi fi MAC

Up time

but no IMSI ;)

perhaps because froyo ?

i'll look for an app with google :(

[Guest urbanCee]

Are you mixing up IMSI with IMEI? IMSI is the SIM cards identity, while IMEI is the phone's serial number. Perhaps the OSF won't display the IMSI in the settings, but I'm sure there's an app for that. Since I don't have my Android at hand I can't tell you if there's an app on the market, but if not I could write one.

yeah, you're right ... i only have the IMEI number on that screen. it won't show my IMSI.

[Guest Sebastian404]

I was just going to ask if you where in austria...

I noticed this ion the build.prop for the YESSS firmware..

#2010-10-28 lichuan	 enable dataroaming as default for YESSS  


#lc enable dataroaming as default for YESSS

ro.com.android.dataroaming=true[/code]


first time I've seen that.. but I assume YESSS is some sort of network reseller?

[Guest uberduck]

that's one of the reason that keeps me from using any MVNO, actually it's also the case for most of those network sharing operators in the UK, such as 3 / Orange(2G) and Orange(2G) / T-Mobile(2G). Android doesn't seem to handle roaming very well (or is it the case for all GSM phones?), it tends to stick to roaming network and not switching back to home (3G) networks