Hello, I am staying in Korea and I got this phone from my friend in USA . I inserted my sim card from my current LG-F180k phone to this phone but received no signal. Therefore I couldn't call or text, even though my phone can recognize the contact list from the sim card. I have to mention that I've already rooted this phone with the tutorial from oneplus forum. Could anyone help me solve this issue? In Korea, there are some shops which sell this phone so I don't think the problem came from the network system.
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Hi. I realy need some help now.
It all started when I brought my own phone the Xperia Z Ultra to wind and got a sim card from them. I notice the internet wasn't fast so I called them up to help diagnose it. They told me to shut off my phone, take out the sim card, put it back in and turn on my phone again. After I did that I got an invalid sim. Wind no longer works with my phone now. I tried replacing the sim card but it didn't work. I tried other sim cards from different providers and they all work, just not wind. I called them up and accuse them of blocking my phone from their network. I ended up getting a phone from them to use their network after my contract with Bell ended.
Can you guys here at XDA help me ou?
Hello all.
I have received a Note 4 910v (Verizon Carrier) as gifr and the phone was factory reset and i inserted an Orange Sim From Mauritius......I got no signal bars as i inserted the sim.
The phone was on 5.0.1 and i update to 5.11 and hoped that i would be getting a network signal from it...But still nothing... I then rooted the whole phone but still nothing.
I read somewhere if i activate the phone with a verizon sim card the problem will be resolved.
If i puchase a new verizon sim card on ebay and try activating the phone without making anycalls....will it work as i wont be getting Verizon signals here in Mauritius.
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.
I brought G930FD galaxy s7 in Singapore during my deployment. It worked fine with other countries sim card. Now i'm back in US tried to use my phone with Verizon sim card
and it didn't work. I got signal but there is no network connection, only Emergency call pop up for a minute then gone.
I tried to adjust the APN but didn't work. Also my phone kept saying "Refreshing Sim Card" couple times. I did some reseach if it's actually region lock but I couldn't find a straight
answer for it. I wonder if this phone is really region lock. If not then what could be a problem for it?
Stal2Gazel2 said:
I brought G930FD galaxy s7 in Singapore during my deployment. It worked fine with other countries sim card. Now i'm back in US tried to use my phone with Verizon sim card
and it didn't work. I got signal but there is no network connection, only Emergency call pop up for a minute then gone.
I tried to adjust the APN but didn't work. Also my phone kept saying "Refreshing Sim Card" couple times. I did some reseach if it's actually region lock but I couldn't find a straight
answer for it. I wonder if this phone is really region lock. If not then what could be a problem for it?
Click to expand...
Click to collapse
From what I know, in order to unlock the region lock, you have to make at least 5 minutes of phone calls in the place you got it. At least this is how it is with the European version I have.
Now about the network issues, if it wasn't a carrier version then it should be unlocked, meaning you can put any Sim card.
My bet, since it's from another country, is that you have to call Verizon and ask them to let it in their network.
I don't believe the G930FD supports CDMA...it is a GSM phone. This is means no compatibility with Verizon or Sprint. You need the US version of the S7 (with the Snapdragon chip) to get CDMA support.
https://www.frequencycheck.com/carr...e-samsung-hero/verizon-wireless-united-states
I recently bought a secondhand phone from someone. It was locked to a certain network so I tried to get an unlock code from two different websites and they both said they couldn't find the code for that IMEI.
I bought a sim card from the network it is locked to and it registers and shows it has signal but I can't make calls or send texts, but strangely enough the very odd time it starts working normally for a few minutes and then stops working again. Since I got the new sim card there has been no problems with the mobile data 3g and 4g.
I brought it into the networks store thinking it was a problem with them but they tried other sim cards and it still didn't work.
Does anyone have any suggestions?
z3r0sum said:
I recently bought a secondhand phone from someone. It was locked to a certain network so I tried to get an unlock code from two different websites and they both said they couldn't find the code for that IMEI.
I bought a sim card from the network it is locked to and it registers and shows it has signal but I can't make calls or send texts, but strangely enough the very odd time it starts working normally for a few minutes and then stops working again. Since I got the new sim card there has been no problems with the mobile data 3g and 4g.
I brought it into the networks store thinking it was a problem with them but they tried other sim cards and it still didn't work.
Does anyone have any suggestions?
Click to expand...
Click to collapse
Greetings and welcome to assist. It looks like someone else had a similar problem here
https://forum.xda-developers.com/p9/help/network-sim-card-dload-method-debrand-t3532705
It could be a stolen phone with fake IMEI but you could try flashing a different firmware for your device to see if that fixes the issue. The experts here
https://forum.xda-developers.com/p9/help
will guide you
Good Luck
Sawdoctor