Develop Bugs

Wifi calling invalid sim?

Tried to do the wifi calling connects to WiFi fine however on the bottom it just says invalid SIM and when i try to click ON it says " calling preference cannot be changed as SIM is invalid....

dlo5 said:
Tried to do the wifi calling connects to WiFi fine however on the bottom it just says invalid SIM and when i try to click ON it says " calling preference cannot be changed as SIM is invalid....
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Ok, this may be a dumb question, BUT...
Do you have a SIM card in there?
AND,
Do you have a T-mobile account?

eViL D: said:
Ok, this may be a dumb question, BUT...
Do you have a SIM card in there?
AND,
Do you have a T-mobile account?
Click to expand...
Click to collapse
lmao, yes and yes
unlimited data plan too and connected to wifi

I had the same problem -- because my SIM was pretty ancient. It was actually a PowerTel SIM (who got bought by VoiceStream who got bought by T-Mobile). Just drop by a T-Mobile store and get a new SIM. It's quick and free.

PS -- In my case, the "My Account" app didn't work, either. It would always say "cannot retreive account information at this time" or something like that. But literally everything else on the device worked fine -- voice, data, SMS, blah blah blah. Even T-Mobile TV.
It was just the stuff that needed specific T-Mobile account information would fail.

Well I have this issue even though I just got a brand new T-mo contract on Thursday so I doubt the sim is ancient?

I realised the problem.
I'm in the UK.....

Call in and add world class roaming for free and wifi calling should work fine
Sent from my T-Mobile G2 using XDA App

No I mean I'm English with a T-Mobile UK sim

Can it worked on sim free that is not T-mobile?

erezsegev said:
Can it worked on sim free that is not T-mobile?
Click to expand...
Click to collapse
No, wifi calling is a tmobile app that only can be used on their network
Sent from my T-Mobile G2

TheMan42 said:
Call in and add world class roaming for free and wifi calling should work fine
Sent from my T-Mobile G2 using XDA App
Click to expand...
Click to collapse
That worked for me. It no longer says invalid SIM!

I didn't even have to call. Just go to settings> wireless&networks> mobile networks> then enable data roaming fixed it for me. Using G2x. This was driving me crazy at first because wifi calling worked fine when i first got phone then after flashing a rom it did not work. This fixed it for me, i know its old post but hope this helps someone else too.

bullets4me said:
I didn't even have to call. Just go to settings> wireless&networks> mobile networks> then enable data roaming fixed it for me. Using G2x. This was driving me crazy at first because wifi calling worked fine when i first got phone then after flashing a rom it did not work. This fixed it for me, i know its old post but hope this helps someone else too.
Click to expand...
Click to collapse
Enabled data roaming and still get Invalid SIM.
any suggestions?
thanks

erezsegev said:
Enabled data roaming and still get Invalid SIM.
any suggestions?
thanks
Click to expand...
Click to collapse
When i wrote my first reply i did not realize this post was for the G2 not the G2x, maybe that's why it didn't work for you, on my G2x international roaming does not need to be on, only national data roaming, i also had to reboot phone after turning roaming on. If this doesn't help i would suggest doing what others have mentioned, call t mobile. Maybe for the G2 the roaming needs to be enabled on t-mobile's side, i really don't know for sure. Good luck, i know how annoying this can be, as i get no cell coverage in my bedroom, so wifi calling is my only option for me. Sorry I couldn't be more helpful.

" Your SIM card does not allow a connection to this network "

Hi there,
I'm on vaca for one month in Africa and I am trying to use my sim card but I have this message :" Your SIM card does not allow a connection to this network "
I tried two different sim cards but I still have the same issue.
Note that the phone was working perfectly yesterday with my Tmobile Sim Card.
It's an international One X so I don't think that I need to unlock it.
Do you guys have any solutions?
Thank you

it sounds like something tmobile end has changed on your account, if possible i'd call them to see if they can help get it working again
other thing to check is the roaming settings, check its enabled etc

Thanks for the reply.
I'm not using that Tmobile sim card anymore. But an Orange one.
Should I factory reset it and see if it'll work?
Thanks

i had this happen on mine, ive got tmobile sim, it went to tmobile orange signal, i tried to manually switch it back to tmobile (better signal coverage) and it said the same thing.
A reboot didnt fix it so i went into settings, storage, make more storage and then cleared all temporary data for all apps.
this seems to temp fix the issue and allows me to reconnect to my peferred network it still happens every now and then so it could be a software gitch with the hox

Just tried it. Didn't work
I will restore it and see how it goes

Even with the New Rom, Superwipe I still have the same issue ?

[Q] Why Does my Korean N7100 think I'm roaming and not connect to mobile internet?

I bought my n7100 on taobao here in China, and it's a Korean version. I put my China Mobile sim card in, and it makes and receives calls, and text messages and can use wifi with no problem.
The only thing is the mobile data doesn't work. I rooted and tried tweakker, and HiNet, to reset my APN and MMS settings, but that didn't work. My phone still thinks I'm roaming.. it displays
this message "Data Roaming, You have lost data connectivity because you let your home network with data roaming turned off".
I've also tried updating the APN and MMS settings manualy with information i've found on the web.
I've googled and searched this forum and I can't find much. I thought it would be an easy APN settings fix but it seems not to be...
I took my phone in to the local China Mobile store they couldn't fix it. I took it to a local android expert here and they didn't know what to do.
Any ideas would be greatly appreciated.

If you bought a Korean Note 2, you don't (shouldn't) have an N7100. I also purchased one through Taobao.
You should have an SHV-E250S, E250L, or E250K. Which one do you have? Check the baseband version under Settings > About device page.
No matter what, you're going to be limited to 2G only with China Mobile.

You're right, It's SHV-E250S, and I'm fine using the 2g in China on China mobile, but I'd just like to know how..any help?
Baseband Version is E-250SKSVLJK

Try removing all modifications to your APN settings.
Next, go into Settings > More settings > Mobile networks > Network mode and change it to GSM only. Also make sure that Data roaming is not selected. Run a new scan for network operators while you're in there to refresh your APN settings to the right ones.

In data network mode I only have 2 options "3g only" or "LTE Preferred" I have it on 3g only. I have now unchecked data roaming, but I don't see any place to scan for network operators. I have included a few screenshots here, sorry i don't know how to insert them.. http://tinypic.com/r/2198djn/6 http://tinypic.com/r/24dhfmx/6 http://tinypic.com/r/2zof98w/6

Now it's obvious why you don't have data. Is this the stock Korean ROM? Are you rooted?
I can point you to a decent ROM that will fix all of this, provided you have the patience to fix it. It's relatively easy.

Yes it seems to be the stock Korean ROM. I am rooted using http://forum.xda-developers.com/showpost.php?p=31801060&postcount=2 I'm more than willing to flash another rom. I've put about 20 hours into this so far, I imagine I can muster enough patience to finish it

Once they give us a damn Korean Note II section, this kind of information will be a lot easier to find.
Try this ROM for now, it's the one I've been using for a few weeks and I love it.
Link source: http://koxda.com/thread-98683-1-1.html
ROM Download: http://pan.baidu.com/share/link?shareid=149494&uk=3355956772
Password: koxda.com

Thanks a lot the rom (715mb) is downloading now, I have tried to flash ROM's on my old galaxy nexus, and on this note II, but I never succeeded, can you please link me to a good guide, on how to flash this rom? thanks.

Odin is included in the download. If you're using Windows 7 you may or may not have the drivers for the phone, and can grab them out of the All-in-one Toolkit. Just installing the toolkit should install the drivers necessary.
http://forum.xda-developers.com/showthread.php?t=1923956
The ROM you're downloading has two files and two pictures, as well. Open the pictures and follow along. All you have to do is click two buttons, select two files, then hit start. It WILL wipe your phone.

I installed that rom you suggested, I went into settings and did GSM only, and had it automatically find my network (china mobile) selected it, rebooted, and still it says i'm roaming so there is no connectivity... any more ideas?

Can you try somebody else's SIM?
There's no reason you should not be getting service unless something is not right with your SIM or phone.

I installed the rom you suggested, i went into settings and made it GSM only, also had it automatically correctly locate my network (china mobile) and it said "registered on network".. but it still isn't working, same problem, it says no connectivity cus i'm roaming.. any ideas now?

my gf will be home from work in a couple hours, I can try her sim card then.. my sim card was cut by me for my old iPhone.. is it possible or likely that the phone can still make and receive calls, but that somehow data connectivity was affected by me cutting the card? also one guy at the phone fixing store tried his sim card (from another company) and internet worked fine he said..

dadroidda said:
I installed the rom you suggested, i went into settings and made it GSM only, also had it automatically correctly locate my network (china mobile) and it said "registered on network".. but it still isn't working, same problem, it says no connectivity cus i'm roaming.. any ideas now?
Click to expand...
Click to collapse
China mobile have various sim plans, from local to province to national. Are you using the sim in the same city in which you bought it? If not and you don't have a national plan, it could be why the phone is showing roaming. In China going from one province to another is already considered roaming unless you have a national plan. This is from my experience back 2 years ago. Also, you best check at a China mobile shop if you have data activated, gprs/edge is not activated by default, you need to ask them to do it.
I would advise you to switch to China unicom as they have 3g/hspa which is much faster than china mobile.
Sent from my GT-N7105 using xda premium

For clarfication, I am in Hainan, and the card is from hainan. I use the same sim card in my galaxy nexus without any problem. I tried my gf's card just now, it didn't say any problem with connectivity, and did not display roaming.. And it shows the G symbol (for 2 or 3 G I assume), and has up and down arrows next to it.. but it doesn't actually work for browsing the web or using apps over the data network.. I even reset all the APN settings and let it automatically find the China Mobile network, but it didn't help.. what if I try to set the APN settings manualy? and any other ideas??

Showing the G symbol is GPRS, which is 2G. You will not get 3G on the N7100, N7105, or Korean model Note 2 on China Mobile.
Sounds like you need a new SIM card. You can try to set the APN manually to make the data work with hers. I've never had to set an APN manually and I've used many phones here with all 3 carriers, so it's a bit odd to me. No clue why your card doesn't work, but since hers is working fine, it's definitely not your phone.

For the record, her card displayed G, but even after messing with settings, I couldn't get it to have working data network..
Today I bought a new card, and had it officially cut to size, put it in the note II and it's still telling me no data connectivity due to i'm roaming.. i'm so frustrated
edit: after restarting a few times and trying to automatically make it register on china mobile .. it worked on the 4th attempt.. it still displays data roaming, and I had to enable data roaming... but now it works, even though it says i'm roaming?? wtf

Ive the same problem with my Korean galaxy note 2 all voice service work perfect but when I tried to turn on data it says insert Usim Card to access network please help

Unlocked, not data connection won't work

I just unlocked my T989D using the guide on here and everything worked fine. I can even get a different sim working on the phone and use it to call/text but it won't pick up a Data connection.
I just tried a Fido sim and it sees the APN settings and everything but the data connection just does not work.
Can someone shed some light on this for me please?

DHeffernan said:
I just unlocked my T989D using the guide on here and everything worked fine. I can even get a different sim working on the phone and use it to call/text but it won't pick up a Data connection.
I just tried a Fido sim and it sees the APN settings and everything but the data connection just does not work.
Can someone shed some light on this for me please?
Click to expand...
Click to collapse
Data is for internet and apps.....phone calls and texts just use the radio signal. Just to be clear. They're 2 different things. You don't need data for calls and texts. I think you know this, but wanted to be sure.
Do you have the new Telus or T-Mobile radio flashed? Only those 2 work on anything current. So what rom or stock version are you running? With the proper radio and apn settings, it should work.
Tho if its an issue caused by unlocking, then I'm not sure.....never done it myself. Did you Google the issue??
Sent from my cellular telephone

kj2112 said:
Data is for internet and apps.....phone calls and texts just use the radio signal. Just to be clear. They're 2 different things. You don't need data for calls and texts. I think you know this, but wanted to be sure.
Do you have the new Telus or T-Mobile radio flashed? Only those 2 work on anything current. So what rom or stock version are you running? With the proper radio and apn settings, it should work.
Tho if its an issue caused by unlocking, then I'm not sure.....never done it myself. Did you Google the issue??
Sent from my cellular telephone
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Click to collapse
Yah I knew that about data. But I managed to get it to work. All I had to do was click on reset to default under APN settings and it started working.
No idea why that worked because I never entered any settings myself but let the actual phone pick up the stuff from Fido.. oh well now it all works.

Phone Stuck Showing "Searching / No Service"

Hello all. I purchased a edge+ today but whenever I insert a sim, the phone stays on searching. I made sure that I rebooted the device and I also tried re-seating the sim many times. I believe the device is unlocked and the imei/esn is in clean standing with T-Mobile. I tried a MetroPCS sim card and it stayed on searching, same thing happened with a Verizon sim. However when I inserted the T-Mobile sim, it sometimes says no service but ever since I rebooted the device, it stays on "searching" no matter which sim is installed. I find this whole ordeal frustrating since the signal bars show up for the MetroPCS and T-Mobile sim but with Verizon nothing happens. Any help would be greatly appreciated.

Yours is G928T? If yes, it does not support Verizon/Sprint even if it's unlocked.
Did you buy it off of Craigslist/Ebay? It might be blacklisted. checkesnfree.com

knite75 said:
Yours is G928T? If yes, it does not support Verizon/Sprint even if it's unlocked.
Did you buy it off of Craigslist/Ebay? It might be blacklisted. checkesnfree.com
Click to expand...
Click to collapse
Yes, it's the G928T but it's not blacklisted I checked. The simcards I was using on the phone were old ones(no longer in service) I thought they would work. I used a scissor to cut my WORKING sim and placed it in the phone and it took the MetroPCS sim. Everything works fine now except calls and text only work with WiFi Calling on. If I turn off WiFi, I can't text or make calls(not on registered network) but if I turn the WiFi back on, it works fine. Any suggestions?

MetroPCS and T-Mobile are on the same network.
Check/add MetroPCS APN.
Setting -> Mobile Networks -> Access Point Names
Add MetroPCS APN if it's not there.
gazasalim said:
Yes, it's the G928T but it's not blacklisted I checked. The simcards I was using on the phone were old ones(no longer in service) I thought they would work. I used a scissor to cut my WORKING sim and placed it in the phone and it took the MetroPCS sim. Everything works fine now except calls and text only work with WiFi Calling on. If I turn off WiFi, I can't text or make calls(not on registered network) but if I turn the WiFi back on, it works fine. Any suggestions?
Click to expand...
Click to collapse

knite75 said:
MetroPCS and T-Mobile are on the same network.
Check/add MetroPCS APN.
Setting -> Mobile Networks -> Access Point Names
Add MetroPCS APN if it's not there.
Click to expand...
Click to collapse
Yeah I know they are which baffles me as to why it isn't working. I tried adding a custom APN but same thing happens. I get calls/sms on WiFi but if I turn it off I get "No Service"

Just go to metro and get a new Sim. You could have damaged it by cutting it. It should be free. ATT gives me then free all the time. Usually, the phone will just auto update the apn settings when a specific carriers Sim is inserted
Sent from my SM-G928T using Tapatalk

erick161 said:
Just go to metro and get a new Sim. You could have damaged it by cutting it. It should be free. ATT gives me then free all the time. Usually, the phone will just auto update the apn settings when a specific carriers Sim is inserted
Sent from my SM-G928T using Tapatalk
Click to expand...
Click to collapse
I went and it turns out the device is blacklisted. This whole time I was rolling with the imei in the phone, after checking last night, I noticed that the imei on the back of the device differs from the one that's actually on the software. I was able to get in touch with the seller and he's coming back to give me my money back. Guess a mod can mark this thread closed.