Wifi calling invalid sim? - G2 and Desire Z Q&A, Help & Troubleshooting

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?
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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.
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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.

Related

[REF] TMobile Official Response to Wifi Calling

i didn't see any wifi caling in the phone, do you guys know why.
Thank you
alibox87 said:
i didn't see any wifi caling in the phone, do you guys know why.
Thank you
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Click to collapse
Its under wifi settings
simply ginger
tennandcoz1 said:
Its under wifi settings
simply ginger
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Click to collapse
what where?
I didn't see it ?????????
I went to the store this morning and they said if you have the newest sim which comes with the phone, then you will see it in settings.
There is no wifi calling at launch, you do need to use the new sim in order to support a new wifi calling feature later this year
Sent from my SGH-T959 using xda premium
Wreximus said:
There is no wifi calling at launch, you do need to use the new sim in order to support a new wifi calling feature later this year
Sent from my SGH-T959 using xda premium
Click to expand...
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Where is this information coming from?
Yea I didn't see wifi calling either. I am disappointed.
Sent from my SGH-T989 using Tapatalk
I Havent got mine yet but my wife works there and supposedly you have to use the sim card that comes with the phone
Can someone who has the phone actually try to initiate a call with wifi calling?
You have to have the new sim that came with the phone. This will not work with an old sim from your previous phone.
I'm using the new sim that was in the box, and i'm not seeing how to initiate wifi calling.
Sent from my SGH-T989 using xda premium
I am using the new SIM. I am connected to Wifi. I don't see any Wifi calling options anywhere...
zaventh said:
I am using the new SIM. I am connected to Wifi. I don't see any Wifi calling options anywhere...
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There should be a check box in the same screen wifi was initiated in.
Jjday7 said:
There should be a check box in the same screen wifi was initiated in.
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Click to collapse
Nope... I see only two checkboxes... Wifi (Enable/Disable) and Network notification... below that is WPS button conneciton and then the list of wireless networks.
I appreciate you looking onto it. That sucks if that option isn't or doesn't become available.
i took mines back because of this and hotspot being blocked.. grrrrr
Okay back i called t-mobile a couple of times. They thought the people were talking about sip, skype, voip calling. Not the wifi calling that t-mobile made. The one that seem to most tech savy rep said there will be a patch to add it but don't know when it will come. The amaze 4g already has it build in under wireless settings.
Killbynature said:
Okay back i called t-mobile a couple of times. They thought the people were talking about sip, skype, voip calling. Not the wifi calling that t-mobile made. The one that seem to most tech savy rep said there will be a patch to add it but don't know when it will come. The amaze 4g already has it build in under wireless settings.
Click to expand...
Click to collapse
Not enough for me to return the phone but really need that option. Oh well....now we wait
For kicks I installed Kineto (Wifi Calling app) and tried to run it... immediately FCs. Oh well. Perhaps this feature can be "unlocked" with a custom ROM that re-adds SIP support to the device. I thought I read somewhere that it is excluded by default.
zaventh said:
For kicks I installed Kineto (Wifi Calling app) and tried to run it... immediately FCs. Oh well. Perhaps this feature can be "unlocked" with a custom ROM that re-adds SIP support to the device. I thought I read somewhere that it is excluded by default.
Click to expand...
Click to collapse
we would have to wait till samsung makes a wifi calling as the one we have now uses htc libs. Sip support is there just not wifi calling for t-mobile sip comes with all gingerbread phones.

Network not connecting

Hey guys, I just got my Hercules (My precious!) in the mail and I am having a
network problem. I am currently on T mobile unlimited data (3G), minutes and texting and Wifi works fine when browsing on the internet
The sim card works perfectly on my Vibrant
Here are some screen shots that might be of help.
PS: No I am not from the future, disregard the time on the attachments
EDIT: I tried factory data reset/SD reset and it still didn't work.
Thanks!
reynaldolp said:
Hey guys, I just got my Hercules (My precious!) in the mail and I am having a
network problem. I am currently on T mobile unlimited data (3G), minutes and texting and Wifi works fine when browsing on the internet
The sim card works perfectly on my Vibrant
Here are some screen shots that might be of help.
PS: No I am not from the future, disregard the time on the attachments
EDIT: I tried factory data reset/SD reset and it still didn't work.
Thanks!
Click to expand...
Click to collapse
Just flash a Custom ROM or flash the modem again via odin.
Sent from my SGH-T989 using xda premium
under settings>wireless and network>mobile networks>, make sure the first option "use packet data" is checked. i've had a couple time that it was unchecked and therefore i had no data connection, but the phone still works in calls and texts. hope this helps.
I rooted and flashed the Juggernaut and checked and unchecked data packets and nothing works. Data, texting or incoming or outgoing calls do not work. I talked to Tmobile rep today and she told me it might be because my sim card is old, so I am going to get a new sim card tomorrow and hopefully it will work.
reynaldolp said:
I rooted and flashed the Juggernaut and checked and unchecked data packets and nothing works. Data, texting or incoming or outgoing calls do not work. I talked to Tmobile rep today and she told me it might be because my sim card is old, so I am going to get a new sim card tomorrow and hopefully it will work.
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Click to collapse
New sim card will be a 4G sim. Old ones according to T-Mo rep was a 2G sim. Newer phones need the newer sim card to run properly.
You need the new TM9177 sim card.
Go to a store and ask for one, just make sure they don't try to make you pay for it.

[Q] No data connection

Hello, I bought and unlocked a HTC M8 but now I have put my sim in everything apart from there is no data connection, Wi Fi works but not data. When I go to Mobile Data in settings it says "disconnected" and when I go to APN it says " Access Point Name settings are not available for this user" Is this the problem ? Can anyone help figuring how to data connect ?
Thanks
Have you selected your network operator first.
Sent from my SM-T805 using XDA Free mobile app
okeytokey said:
Hello, I bought and unlocked a HTC M8 but now I have put my sim in everything apart from there is no data connection, Wi Fi works but not data. When I go to Mobile Data in settings it says "disconnected" and when I go to APN it says " Access Point Name settings are not available for this user" Is this the problem ? Can anyone help figuring how to data connect ?
Thanks
Click to expand...
Click to collapse
This is one of those things that can be most easily solved by calling your operator. When I got my phone and put in the sim card, I had no data. I called O2 and they guy walked me through the setup. It might be a noob way to solve problems, but it definitely works.
ashyx said:
Have you selected your network operator first.
Sent from my SM-T805 using XDA Free mobile app
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Click to collapse
I have. Thanks
unifex_ said:
This is one of those things that can be most easily solved by calling your operator. When I got my phone and put in the sim card, I had no data. I called O2 and they guy walked me through the setup. It might be a noob way to solve problems, but it definitely works.
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OK great thanks, does it matter that I have a contract and its not the phone I took it out with?
okeytokey said:
OK great thanks, does it matter that I have a contract and its not the phone I took it out with?
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It did not matter for me. I have an unlocked phone and a sim card from O2. O2 is providing me with the service, it's their job to make sure it works. My phone was brand new, so it would be safe to assume that there was nothing special about it. Also, here in Germany I can always return the sim card and void the contract within two weeks after buying it, so the network wants to keep me happy .
What does it say under Settings> About>Network?
ashyx said:
What does it say under Settings> About>Network?
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Click to collapse
Operator name
3
Signal strength
RSRP(dBm) 85 RSRQ (dB) 10
Cellular network type
4G
Service state
In service
Roaming
not roaming

[Q] Enable Mobile Hotspot on Unlocked ATT Galaxy Note 2

We have a Galaxy Note 2 from ATT now. Just upgraded, so we're not using it. We want to take it to Europe to use as a phone and a hotspot for our computers on our trip. I've read that people do that with unlocked Androids and a European SIM.
I was able to unlock the phone with no problem using a data only T-Mobile SIM card in the process. The problem is that I can't turn the Mobile Hot Spot on. I've tried with the valid data only T-mobild SIM installed. When I try to turn the hotspot on, it says that either the network is not available, or there's an invalid SIM. I'm worried that it's the ATT restrictions on the phone that aren't going away even if the phone is unlocked, and there's a different SIM in place.
Does anyone know what we have to do to enable the hotspot, so that this phone can be used in Europe?
Thanks.
Try with wifix.apk
androidlabs said:
Try with wifix.apk
Click to expand...
Click to collapse
Thanks. That looks like a good app to fix problems connecting to external wifi sources. However, I want my phone to BE the wifi source when in Europe. Still looking for a solution.
artbytes said:
Thanks. That looks like a good app to fix problems connecting to external wifi sources. However, I want my phone to BE the wifi source when in Europe. Still looking for a solution.
Click to expand...
Click to collapse
Sorry my bad you should go for foxfi.apk to fix locked wifi and usb tetharing and its tested by me (if it doesn't work for u then there are several more apks. search). Good luck
artbytes said:
We have a Galaxy Note 2 from ATT now. Just upgraded, so we're not using it. We want to take it to Europe to use as a phone and a hotspot for our computers on our trip. I've read that people do that with unlocked Androids and a European SIM.
I was able to unlock the phone with no problem using a data only T-Mobile SIM card in the process. The problem is that I can't turn the Mobile Hot Spot on. I've tried with the valid data only T-mobild SIM installed. When I try to turn the hotspot on, it says that either the network is not available, or there's an invalid SIM. I'm worried that it's the ATT restrictions on the phone that aren't going away even if the phone is unlocked, and there's a different SIM in place.
Does anyone know what we have to do to enable the hotspot, so that this phone can be used in Europe?
Thanks.
Click to expand...
Click to collapse
The thing that sticks out to me is that you actually need the correct Sim card that is provisioned for phone service.. I'm assuming this "data only sim" was provisioned for a tablet and therefore can't make any calls... the network unavailable message will show up even with no Sim installed and trying to enable a hotspot. You need a valid cell service in order to hotspot.
Hope Getting the Right SIM will do it.
getyroks said:
The thing that sticks out to me is that you actually need the correct Sim card that is provisioned for phone service.. I'm assuming this "data only sim" was provisioned for a tablet and therefore can't make any calls... the network unavailable message will show up even with no Sim installed and trying to enable a hotspot. You need a valid cell service in order to hotspot.
Click to expand...
Click to collapse
Thanks. I hope that's what the problem is. It would make things simpler to be sure. I just didn't want to get there and then find out it wasn't going to work. In the meantime, I found my old Galaxy S 3. I managed to unlock it, root it, and install basic ROM. Thought maybe that would work, as well. I'll know by next week.

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?
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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.

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