I bought Galaxy S2 in China, flashed new ROM, and lost ability to use ATT SIM. Orange SIM works fine, but ATT one simple does not work anymore. I am in US now.
In setting->about phone->status it shows the mobile number from SIM, shows AT&T under "Network", service state "IN service", and "Not roaming".
However, phone does not make and does nor receive calls. If I replace ATT SIM with Orange one, it roams on T-mobile and works fine for calls and data.
Anyone can help?
thanks,
Michael
same here
i have the same problem. my flash counter is at 0. 3g data is down for me, but wifi works perfect. text messaging is also good. but i cant seem to find a fix for this
Hi, I have the UK 4G galaxy tab 3 8.0. I've been using a Three network voice/text/data sim in it for a few months, till I tried to go on the the browser and it said 'Your Sim Will Only Work in Your Phone'. Tried everything I could think of to get it to work. I called the network explained that my tab was a phone because I've been making calls off of it. They was having none of it and said my sim will no longer work for data inside my tab....killer!! It's my only source of internet and I haven't got another device to use it with. I was thinking possibly if I root it, there may be a utility which allows me to change what my tab is seen as. For example change it so it's recognised as a phone and then my sim will start working again. It's never going to work again as it is at the moment. I've rooted it before and didn't really want to do it again, because it kept screwing my data connection, I unrooted and it's been fine for weeks. Please someone help! If I have missed any details, sorry.
P.s the tab came from Vodafone UK with a sim contract that is not being used anymore, I bought the tab near enough brand new but still pre-owned.
Thanks anyway
I have the SM-G930FD, carrier unlocked from UAE. It's got the stock android 6.0.1 on it. I bought this phone from NewEgg in the US specifically to take with me to Asia so I can have a Thai SIM for data and my US number available for texts, and also for data when I'm outside of Thailand (yay for T-Mobile and free texting/2G internet). I just got to Thailand yesterday and the dual sim functionality is NOT working
Same issue as reported in the GS7 EDGE version here: http://forum.xda-developers.com/s7-edge/help/s7-edge-duos-data-connectivity-problems-t3349324 - but I don't see any reports of it happening on the regular GS7
More info:
Slot 1: Thai SIM card (I tried two different carriers)
Slot 2: T-Mobile SIM
I set EVERYTHING to use the Thai SIM, and have both SIMs turned ON. Everything works fine for a few minutes, and then BAM, Internet stops working! It says not connected whenever I try to load a webpage, etc. etc. The phone shows The Thai SIM for voice and text, BUT now it shows the T-Mobile SIM for data, EVEN THOUGH if I go back to the Sim Manager, it clearly has the Thai SIM set for data. And obviously it's not pulling data from the T-Mobile SIM or I would have (slow) internet on the phone. The only way I can fix this is to go to the SIM manager and switch to the T-Mobile SIM for data and then switch back to the Thai SIM. The only problem is that this fix could last 30 seconds, or it could last an hour.
In the thread referenced above, there was no definitive fix. Someone said install the Italy or France Firmware, but others say it didn't work for them.
If I turn off the T-Mobile SIM altogether, the Thai SIM's data is steady. But the purpose of this phone is to have dual sim!
The only other thing of note is that when I go to the SIM Manager screen, it shows my US number for my T-Mobile SIM, but it shows "unknown" for my Thai SIM. I checked the APN settings and they all look good.
Could this be a hardware issue that some people are experiencing? It's too late to return the phone :-/
Same Issue
Hey there. I have a G930FD from UAE and I'm having the exact same issue. I'm getting ready to push SUPERMAN ROM on to it to see if that might fix it. Such a pain.
Just wanted you to know you're not alone.
what happened is that I lost the signal on my smartphone released from sim card now I have no sign everything was fine just wrong me to get into activating device and precione right key in it came out the menu I got into the last box to know that it was the menu and restart the smartphone and do not grab me my sim card telcel need help if they can send a greeting from mexico thanks guys
Hello everyone, im new here kept searching everywhere for solution for my problem without any success. In may 10 i bought SM-G955N KT module, it was working great with 2g / 3g / 4g / LTE / LTE+, i went out of usa for almost 3 month and when i came back my phone doesn't work well with tmobile, i can send msgs use lte internet but i cant do calls at some areas, some times i have full lte bar and when i try to make a call it goes to 0 signal bar, i called tmobile many times about the issue but no solution i found out that they did upgrades to their towers in the period i was out of usa from may to august, right now i cant use the phone as any normal person its been a month that i cant use the phone at my house and some areas, i can make calls sometimes if im at different tower locations. Question is, is there any solution for this problem since tmobile did those tower upgrades its screwed up everything..... should move out to att or verizon or what should i do. I really need help with this problem its been a month, any solution would be welcome if it requires root or not i dont care i just want to find a solution for this,
Thank you.
Have you tried resetting your network settings and/or getting a new sim card?
Its not the sim card i already changed it to a new one also i tried it on a iphone 7s plus and it works fine, my phone is bone stock no root no custom software alsi its the korean version when i looked around i found that tmobile did some network upgrades from may to aug and thats when my phone got screwed up, i was albe to play with the ims setting and i got the phone to recive calls but i cant make calls, does my phone screwed up because it has the korean csc and the stock firmware or whats going on here
I'm not quite sure I understand your experience. From what I am reading, you went to Korea, got the G955N (which I bought for both myself and my wife), and then came back to the states and can't get it to work with T-Mobile?
I tried to get mine to work with T-Mobile and have experimented extensively with different CSCs and ROMs.
I eventually went over to AT&T
I've also had a rather extensive experience of how to get 4GLTE working here in the states with AT&T.
Feel free to reply here or DM me if you wish.
caniswesley said:
I'm not quite sure I understand your experience. From what I am reading, you went to Korea, got the G955N (which I bought for both myself and my wife), and then came back to the states and can't get it to work with T-Mobile?
I tried to get mine to work with T-Mobile and have experimented extensively with different CSCs and ROMs.
I eventually went over to AT&T
I've also had a rather extensive experience of how to get 4GLTE working here in the states with AT&T.
Feel free to reply here or DM me if you wish.
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Click to collapse
Hello thanks for your input, actually i bought the phone in the box brand new from amazon, it came here on may 10 i used it for 7 days 4G LTE 3G works great then i had to go out of country for 3 month i came back at the end of august to find that tmobile did a huge tower upgrades in my area, since i came back i wasnt able to do calls and receive calls, i was only able to text and use LTE internet but not calls, i went to different towers area and i actually was able to make calls but not in every area because some times my signal bar goes down to 0 or even 1 signal and i cant make calls still but my other friends who owns iphones or usa version of android works fine except me. Yesterday i edited the IMS setting im still on stock fw and i enabled every single feature there and i was able to receive calls in my area but still i cant do calls, i wanted to make sure if im gonna follow the steps here in this guide i will be able to use TMOBILE CSC with the korean stock firmware and get the features of tmobile as VOLTE and WIFI CALLING etc with the right CSC for sure and without tripping knox
Thank you
Hi, I did some extensive searching and was not able to find a solution for this.
I've got the SM-G955N, and ran into the same issues as other users in this thread with T-Mobile, has anyone found a workaround to unlock the LTE bands necessary to make the SM-G955N work with T-Mobile?
I didnt find solution yet too, i dont know what to do i gave up i tried everything on the official software no root.
androw3349 said:
Its not the sim card i already changed it to a new one also i tried it on a iphone 7s plus and it works fine, my phone is bone stock no root no custom software alsi its the korean version when i looked around i found that tmobile did some network upgrades from may to aug and thats when my phone got screwed up, i was albe to play with the ims setting and i got the phone to recive calls but i cant make calls, does my phone screwed up because it has the korean csc and the stock firmware or whats going on here
Click to expand...
Click to collapse
I had a phone with the Korean CSC as well, N phone as well. I left the CSC alone and it worked with T-Mobile and ATT here in the US just fine, last fall.
I later changed the CSC to XXA, and still works well. Just tested it this week with T-Mobile, and it's working. I have to say, that locally, T-Mobile has much poorer spot area service than ATT. Kinda puzzling, but that is the way it is.
My phone is rooted, so it make things a bit more handy to mess about and return to my previous setups.