Database Develop

[Q] Reception problem for Samsung Galaxy S

Going to send a donation to the site if this works as it'll save me money I would spend in a shop getting it fixed. I read the rules and did a search for a similar topic, but each one seemed to be slightly different from my situation, I hope this is the right area of the forum as I'm new to it.
The phone was brought from T-Mobile but I also have an O2 account that I use for work so would like to be able to switch between sims with ease. I'm a total newbie with Samsung, especially the way it works so treat my question as if you were answering a child
I'm on a mac and used the method posted on this site to unlock it and that worked (as far as I know), it said unlock successful etc but now the sim isn't recognized apart from it being on O2, and there is a symbol of a sim card with red around it and a blue circle with a line through it at the top where reception would be. What's even more worrying is that the original T-Mobile sim card is getting the same response as well.
Thanks a lot.

Try to hold it correctly as said Steve
Sent from my GT-I9000 using Tapatalk

Are you sure you fitted the sim card properly? Last month I had a blonde moment when I inserted the sim card the wrong way and wondered why I had no reception.
Also you might want to clean the contacts.
Sent from my Galaxy S using XDA App

You could also check you have network settings for O2 .
Suggest it may have failed to unlock if its not the settings .
Just borrow another network sim and try that same error on sim = not unlocked .
jje

JJEgan said:
You could also check you have network settings for O2 .
Suggest it may have failed to unlock if its not the settings .
Just borrow another network sim and try that same error on sim = not unlocked .
jje
Click to expand...
Click to collapse
I've tried that, but no luck. It says my sim isn't able to connect to that provider, despite it being an O2 sim that works perfectly on another phone. Or do you mean network settings that needs to be manually put into the phone?
icejagans said:
Are you sure you fitted the sim card properly? Last month I had a blonde moment when I inserted the sim card the wrong way and wondered why I had no reception.
Also you might want to clean the contacts.
Sent from my Galaxy S using XDA App
Click to expand...
Click to collapse
Hah, I actually read about a few people doing this as I was searching the net for a solution but I have put it in right. I even put it in upside down just to be sure I wasn't being an idiot.
Yo_oY said:
Try to hold it correctly as said Steve
Sent from my GT-I9000 using Tapatalk
Click to expand...
Click to collapse
?

Have you checked your APN settings in your phone?
To get to the settings section, follow this path.
Settings>Wireless and Network>Mobile Networks>Access Point Names
I was going to post a link to a site that has all the U.K carrier settings, but I need a few more posts to be able to do that.
Just do a google search for each mobile carriers APN settings and manually enter the information.
I'm not sure if this will solve your problem, but it's a good place to start.

[Q] No Service - Insert Sim Card to access network services

Hi Everybody.
Well, i bought my Samsung Galaxy 6 months ago and it's a awesome phone, but now I've got some issues.
4 Months ago - My phone comes with froyo 2.2.1 so I decided to update it using kies to Gingerbread 2.3.3, after that, My phone starts to had some issues, first when I press the home button the phone didn't response, the screen was in black but I could get calls, messages and lisening to music, this was solved after reboot the phone but in any time could happen again.
Now - because the issue before, I decided to use Darky's rom 10.1 and the issue suddenly dissapear.
After 1 moth and a half I decided to flash Gingerbread 2.3.4 stock rom and a new issue appears and since there, I can't solve it.
Sometimes, my phone get lost its signal and when to "Network Selection" a message comes out "Insert Sim Card to access network services", I can't do any call o use 3g, the only way to solve it temporarily is rebooting the phone.
I use many versions (JVP, JVQ, JVR, even MIUI) but the issue still happen.
Please, I'd aprecciate if you can give some help to solve my problem.
Regards.

Did u chk other sim on your phone?
Sent from my GT-I9000 using XDA App

Hello.
Yes, right now my phone has another sim card and everything is fine, but this SIM hasn't got any plan with internet, maybe the problem is when the phone use 3G.
Regards.

May be your sim has problem not ur phone.
Sent from my GT-I9000 using XDA App

ali_khalid5518 said:
May be your sim has problem not ur phone.
Sent from my GT-I9000 using XDA App
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Click to collapse
That's what I thought, but I changed my sim card when the problem began.
Should I change my sim card again?
Regards.

I think he meant changing a new sim card with the phone company?

Yes you should replace that sim card from your company.
Sent from my GT-I9000 using XDA App

ok, I'm going to chanche my NEW SIM CARD (becase it's new) for another one.
I hope this will solve my problem, I'll let you know if everything is ok or not.
Thanks.

I have just solved a similar problem with my Samsung Galaxy S I9003.
The reason was software unrelated but seemed to be a hardware connection problem. The phone was unable to access the mobile network showing a "No Service" status, also the IMEI number was unknown on the phone settings. The mobile wasn't even requesting the SIM Card code when it was turned on. But the rest of the services were working properly (wifi, bluetooth, etc).
Although i tried everything such as re-flashing, re-rooting and even IMEI restoration techniques such as in youtube "Samsung Galaxy S (IMEI Restoration Techniques)", I was unable to fix it.
The solution was to open the phone and just adjust the sim card slot connectors. I will keep the phone on testing to see if that happens again.

[Q] Dual sim issues

I have one sim that I wish to use for phones / text messages, and one that I wish to use for mobile data.
If I put either sim in on its own, it works fine.
If I put both in together, and set them so they are both on, the one that I wish to use for phone calls and texts does not register on its network (which is Three in the UK)
I am not sure what to do. Can the phone company have set it so it doesn't work in a dual sim setting?
Or have I just failed to understand what dual sim is?
Any help much appreciated!

stoichkov88 said:
I have one sim that I wish to use for phones / text messages, and one that I wish to use for mobile data.
If I put either sim in on its own, it works fine.
If I put both in together, and set them so they are both on, the one that I wish to use for phone calls and texts does not register on its network (which is Three in the UK)
I am not sure what to do. Can the phone company have set it so it doesn't work in a dual sim setting?
Or have I just failed to understand what dual sim is?
Any help much appreciated!
Click to expand...
Click to collapse
Try interchanging the SIM, I mean just enter the right one on the left and the left one on the right. What you are saying shouldn't happen.
If possible try another 2 SIM to see if the problem is with the SIM or the phone.

pleomaxell said:
Try interchanging the SIM, I mean just enter the right one on the left and the left one on the right. What you are saying shouldn't happen.
If possible try another 2 SIM to see if the problem is with the SIM or the phone.
Click to expand...
Click to collapse
OK thanks. I have tried it with another 2 sims and it works fine. So that means it's a faulty sim?
Is it possible the network won't allow dual sim, or should I just request a replacement?
Thanks

stoichkov88 said:
OK thanks. I have tried it with another 2 sims and it works fine. So that means it's a faulty sim?
Is it possible the network won't allow dual sim, or should I just request a replacement?
Thanks
Click to expand...
Click to collapse
Before requesting a replacement just ask the network operator of that particular SIM that if they disallow Dual-SIM or not. If they don't allow using their SIM on a dula-sim mobile asking for a replacement would be pointless.

I am using 3 (UK) and Vodafone, no issues, so likely the sim
Sent from my XT1068 using XDA Free mobile app

Data connection OK, but no voice calling

im using my SGN4 in a brazilian carrier, and everything was working perfectly till from nowhere the phone lost connection from network.
I was unable to make phone calls , but strangely my 4g connection was on i could browse on the web normally. How this is possible? I popped out the sim card and tried in another phone, it worked normally. I also tried another carrier on SGN4, i was ok too. Anyone have an idea what is going on?

factory reset, problem persists, i have data connection, but cant make phone calls.

Is the phone unlocked. Yes I have to ask.
BAD ASS NOTE 4

Yes it is as I told I was using it with my Brazilian SIM card

Is their anyway to check if it still unlocked. I know some people said when they unlocked it was a temp unlock. Did you check APN to make sure they set right for that carrier
BAD ASS NOTE 4

hey guys, im back to this post because the problem persists.
Here is the scenario:
I bought the phone from a Swappa Seller. Phone is t-mobile branded and was in the box, Brand new.
http://swappa.com/listing/ZPB505/view
Brand New Samsung Galaxy Note 4 SM-N910T White ( UNLOCKED) 32GB
Phone is brand new in its original box. The phone has never been used. All Accessories are still sealed in plastic - The phone model is SM-N910T. This is a great deal on a BRAND new - NEVER USED phone!
This phone is guaranteed to work with AT&T. There is no regional lock whatsoever
Click to expand...
Click to collapse
Achraf G. Seller - Nov 03, 2014 - 11:47 PM
Also note that this phone won't work with T-Mobile. Thanks
Click to expand...
Click to collapse
Can anybody tell me why a T-mobile unlocked phone won't work with T-mobile?
I used the phone on my carrier and it was flawless. Everything was fine till suddenly i lost phone signal. It always show "NO SERVICE" message now, but strangely I still have 4G Connection. I can use the phone to navigate, not to make phone calls.
So I swapped carriers, and the phone was working ok, phone calls, data connection.... then the thing happened again: no service, but i have 4g LTE connection.
Inserted a third sim card, from another carrier. Phone is fine, workin as it should! But this is not my main sim card and i would like it very much to work with ANY carrier. Do you guys have any idea what the problem is? Factory reset did not work at all. For the others sim cards, it recognize the network for a second and then "no service". How can i have data connection if there is "no service"?
Im really desperate because i payed a lot for this note 4... Maybe if i root the phone and flash another ROM?
help please!

Is that possible that previous owner reported is lost and now imei is blocked? Your carrier may participate in that program.
Sent from my SM-N910T using XDA Free mobile app

thank you im going to check with my carrier.

* BUMP *
Sorry to revive this old thread, but has anybody figured this out?
I too have data with No Service (no voice) when roaming to the USA from Mexico (Telcel). My Note 4 was purchased on T-Mobile USA (contract free) but got it unlocked by gsmunlockers.
Everything was perfect until I got my Note 4 upgraded to 5.1.1 rooted. I have tried several other ROMS and Basebands with no avail.
Any ideas?
Cheers!

Mi 9 - Android Q Mobile Network isn't available

Hi,
I just bought a Mi 9 for my gf as Birthday gift and have a big problem with it.
We use her Simcard from her further phone, which works there without issues, but the Mi 9 just let her use Data on the simcard (internet). No calls or texts in-/ outbound are possible. It always shows that no mobile network is available.
I already readded all APNs (Internet, LTE, GPRS) and tried a couple different network settings (*#*#4636#*#*). I'm not sure why this issue appears and searched allover the internet. Seems like noone else have this problem.
Version is 11.0.2.0(QFAMIXM) with locked bootloader. Could it be that seller flashed something wrong, modem type or whatever? Carrier lock wouldn't let us use the actual sim right? My own sim as well just work with data so it need to be an issue with the phone.
Thanks in advance
Chris

Noone have any idea what the issue could be?

This seems like an operator related issue and probably has nothing to do with the Mi9. Try operator related forums for more help. The only thing that comes to mind is to get a new sim from the operator.

ChrisMNL said:
Noone have any idea what the issue could be?
Click to expand...
Click to collapse
Question:
Does mi9 recognize the SIM Card? Does mi9 ASK for your SIM Card PIN? Or does mi9 say 'no SIM Card installed'?

Hi,
Sim is recognized and contacts shown. Sim pin is deactivated so the Phone don't ask.
Mobile Network is shown and active and data/ internet works. Its just the GPRS funtions (Text, Calls) which don't work. When I try to call I get the "Mobile Network isn't available" message and texts don't sent.
Thanks

This seems like an operator related issue and probably has nothing to do with the Mi9. Try operator related forums for more help. The only thing that comes to mind is to get a new sim from the operator.
Click to expand...
Click to collapse
The Sim works fine in another phone and my sim which works as well, shows the same errors in the Mi 9. So it must be an phone issue.

ChrisMNL said:
The Sim works fine in another phone and my sim which works as well, shows the same errors in the Mi 9. So it must be an phone issue.
Click to expand...
Click to collapse
What operator do you use? What operators are the respective cards you have tried in the Mi9? Did you buy the phone from a private person and not new in a sealed package? In this case contact the seller.

ChrisMNL said:
The Sim works fine in another phone and my sim which works as well, shows the same errors in the Mi 9. So it must be an phone issue.
Click to expand...
Click to collapse
Do you have 2 simcards installed?
You also might try to reset the modems, howto you can find when searching the forum

Just 1 sim installed. 2nd slot shows the same issues. Will check the forum for modem reset thanks.

Hi,
Weirdly the phone seem to have a Carrier Lock. My gf uses SMART Prepaid here on the Philippines and as said just mobile data was working. Yesterday she switched the SIM for testing to Globe and with this SIM everything works. 4G is available and calls/ texts work as they should.
I'm still confused about this. If the Phone would be carrier locked, should another Carrier SIM not be functional at all? I don't get why Data connections are working then.
For now the solution is to get another SIM. Probably let it unlock in a store.
Regards
Chris