[Q] - Nexus S Q&A, Help & Troubleshooting

I recently bought an unlocked Samsung Google Nexus S GT-i9020T from eBay. The Device works fine on TMobile network. When I got it to India and tried inserting an Airtel SIM in it. The phone shows complete Signal strength but says emergency calls only. On the lock screen it says insert SIM.
When I search for available mobile networks it shows my network but unable to connect to it. It does not even ask for unlock code when I insert a SIM from another carrier.
Is this because the phone is locked or is there some other problem?

Compare the IMEI code you can found beneath your battery on a sticker with the one displayed after typing *#06# command in dialer.
If they equal, then it can be an incompatibility problem.
I suppose Nexus S cannot be locked to an operator.

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[Q] How to Unlock 'Samsung Google Nexus S GT-i9020T' for India Service provider

I recently bought an unlocked Samsung Google Nexus S GT-i9020T from eBay. The Device works fine on TMobile network. When I got it to India and tried inserting an Airtel SIM in it. The phone shows complete Signal strength but says emergency calls only. On the lock screen it says insert SIM.
When I search for available mobile networks it shows my network but unable to connect to it. It does not even ask for unlock code when I insert a SIM from another carrier.
Is this because the phone is locked or is there some other problem?
The only lock you (might) have on that phone is the boot loader. Google phones are not carrier locked.
the problem lies elsewhere (I don't know where)
Thanks for the reply, i could see phone status as UNLOCK at Boot loader time, when i insert my sim (INDIA) it is not recognizing the sim/network.
stupid question:
Have you tried with another sim card?
chinoquezada said:
stupid question:
Have you tried with another sim card?
Click to expand...
Click to collapse
stupid answer.....
---------- Post added at 09:26 PM ---------- Previous post was at 09:19 PM ----------
komandlareddy said:
I recently bought an unlocked Samsung Google Nexus S GT-i9020T from eBay. The Device works fine on TMobile network. When I got it to India and tried inserting an Airtel SIM in it. The phone shows complete Signal strength but says emergency calls only. On the lock screen it says insert SIM.
When I search for available mobile networks it shows my network but unable to connect to it. It does not even ask for unlock code when I insert a SIM from another carrier.
Is this because the phone is locked or is there some other problem?
Click to expand...
Click to collapse
your phone is bootloader unlocked but still it has network lock. unlock it for network(service provider)
GSM nexus devices are not looked to a carrier period.
i9020T
komandlareddy said:
I recently bought an unlocked Samsung Google Nexus S GT-i9020T from eBay. The Device works fine on TMobile network. When I got it to India and tried inserting an Airtel SIM in it. The phone shows complete Signal strength but says emergency calls only. On the lock screen it says insert SIM.
When I search for available mobile networks it shows my network but unable to connect to it. It does not even ask for unlock code when I insert a SIM from another carrier.
Is this because the phone is locked or is there some other problem?
Click to expand...
Click to collapse
Hi.
Your phone i9020T is unlocked from factory.
Your SIM tray is broken. It's a common issue if you have tried to insert a micro-Sim adapter.
Look at my EBAY's user "manuelpulgar".
I'm actually selling original ones.
Best whises.
cabilaca said:
Hi.
Your phone i9020T is unlocked from factory.
Your SIM tray is broken. It's a common issue if you have tried to insert a micro-Sim adapter.
Look at my EBAY's user "manuelpulgar".
I'm actually selling original ones.
Best whises.
Click to expand...
Click to collapse
This could be true. If the phone was sim locked, it would give a message. On the other hand, I also use a 9020T I had bought from US and it wasn't locked.
I suggest get it checked at a Samsung service center. Nexus s was officially released in India and Samsung will be able to help you.
Sent from my Nexus S

my phone doesn't detect T-Mobile Network

HI there,
My phone is an international one- Unlockedd from the factory. The screen was broken so I had to change it. when I ordered screen from amazon there was an At&t logo on it. So when I replaced it and inserted the SIM, it doesn't show me T-Mobile Network . it just shows me At&t and when I try to connect to it it says "Your SIM card does not allow a connection to this network" .
is it because the screen has an At&t logo ? . I tried inserting the sim in another phone and it worked and showed me T-mobile in the upper side of the screen.
my Line provider is Simple Mobile.
Thanks.
slsgl2011 said:
HI there,
My phone is an international one- Unlockedd from the factory. The screen was broken so I had to change it. when I ordered screen from amazon there was an At&t logo on it. So when I replaced it and inserted the SIM, it doesn't show me T-Mobile Network . it just shows me At&t and when I try to connect to it it says "Your SIM card does not allow a connection to this network" .
is it because the screen has an At&t logo ? . I tried inserting the sim in another phone and it worked and showed me T-mobile in the upper side of the screen.
my Line provider is Simple Mobile.
Thanks.
Click to expand...
Click to collapse
Your screen has no bearing on what network you can connect to. Also, if you have an international One X, you're posting in the wrong forum. Post in the international one x forum.

[Completed] No Service in Cdma only. Gsm/Umts only Invalid sim card

i have 831c (htc). I tried unlocking all bands but i stopped at the last moment. After a day the phone had no signal. i tried all things cleaning sim removing rebooting etc. The same sim works fine on other phones. The phone is factory unlocked and used to be locked on sprint. It keeps on asking for activation though after avoiding it goes away. Whenever i put the sim in , in cdma only or lte/cdma mode. It shows no sim. and when i use gsm/utms only it says invalid sim contact customer service. I have shifted to asia. Help
Hi,
Thanks for using XDA Assist If its Sprint then its Carrier Locked Device you cannot use any other Sim than the carrier it is allowed to use .. Contact your Customer Care Service and enquire about it
Good Luck!

Help - Unlock Carrier tool

I have a polish sim card which works fine with my other Iphone, when i insert the same sim card to my nexus 5 it can't register to any carrier !
Why is that, is there any solution for this bizarre problem ?
Thanks
You tried the sim with an iphone (works) and Nexus 5 (doesn't work). Did you try the sim in a third phone?
The Nexus 5 cannot be carrier unlocked because it was never carrier locked.
I don't have a third phone. Do you think that I should flash another radio ver. on the phone?
The Nexus 5 detects the sim card? If it does detect the sim card, I think your iphone's imei is somehow tied to the sim card.
What does it mean?
And how can I resolve it?
I would really appreciate any help ?
P.s.
Apparently a different sim (vodaphone) doesn't work in this phone either.
???
Has the vodaphone sim been activated?
If both sim cards do not work in the phone and the phone can see but not connect to networks, it may be possible that the phone is blacklisted? Is the imei correct?
audit13 said:
Has the vodaphone sim been activated?
If both sim cards do not work in the phone and the phone can see but not connect to networks, it may be possible that the phone is blacklisted? Is the imei correct?
Click to expand...
Click to collapse
That's friend phone....so....
He said that the sim (which doesn't work right now) worked before. I don't know about the Vodafone sim.
How can i find out that this phone is in the blacklisted?
Thanks again,
You can check the imei here: https://swappa.com/esn
Since the vodaphone sim is not active, it is not a good test of the Nexus 5. It would be best to try an active/working sim in the N5.
1. How can I know if my phone tied to the sim card ? (you mentioned it before)
2. Do you know this website http://www.imei.info/
Thanks
I don't know that site but the swappa site will tell you if the phone is blacklisted.
The only way to tell if the sim card is tied to the iPhone;'s imei is to try the sim in another phone to see if you can connect to the carrier network. In the USA, AT&T tie their prepaid sim cards to a phone imei.
As I mentioned before the sim card worked fine with my iPhone.
But the "fishy" story here is that the Vodafone's sim card doesn't work as well.
So it might be a blacklisted issue.
Your thoughts?
Did you check the imei on the swappa site?
Note yet
I would check the imei to make sure the imei is not blacklisted and does belong to a nexus 5.
I updated my friend to do so.
Thanks

[Help] S8 + PUK issue.

I got a Galaxy S8+ from Telus (Canada) Phone works great with Telus SIMs, phone is not black listed or anything. I am with Rogers, so I purchased a unlock code from https://www.mobileincanada.com/ , took like almost 2 weeks.
Code finally arrived. when i input the network unlock code, the phone right after asked me for a PUK. I figured Id get a PUK from both Telus and Rogers (knowing the PUK is attached to the SIM)
I entered the Rogers (Sim carrier) PUK and did not work, entered the Telus PUK (Phone carrier) and did not work ether.
SIM works fine with other phones, and the PUK is asked for with any SIM I enter.
Anyone know what might be happening? How to fix it?
Rosco911 said:
I got a Galaxy S8+ from Telus (Canada) Phone works great with Telus SIMs, phone is not black listed or anything. I am with Rogers, so I purchased a unlock code from https://www.mobileincanada.com/ , took like almost 2 weeks.
Code finally arrived. when i input the network unlock code, the phone right after asked me for a PUK. I figured Id get a PUK from both Telus and Rogers (knowing the PUK is attached to the SIM)
I entered the Rogers (Sim carrier) PUK and did not work, entered the Telus PUK (Phone carrier) and did not work ether.
SIM works fine with other phones, and the PUK is asked for with any SIM I enter.
Anyone know what might be happening? How to fix it?
Click to expand...
Click to collapse
PUK (Personal Unblock Key) is usually mentioned on the SIM card (The Bigger part) itself, and if you have not received it in the starter pack, You can always call up the network provider and ask for it. Also, Attempt first with just one sim in the slot to identify which one is asking for it.
JazonX said:
PUK (Personal Unblock Key) is usually mentioned on the SIM card (The Bigger part) itself, and if you have not received it in the starter pack, You can always call up the network provider and ask for it. Also, Attempt first with just one sim in the slot to identify which one is asking for it.
Click to expand...
Click to collapse
PUK (Personal Unblock Key) is what i got. As mentioned , my carriers SIM card is the one asking for it... Its only the SIM from the phones carrier, telus that doesnt... every other carrier asks for it.
I have tried 3 different carriers. The PUK message appears each time. I was able to change my SIM cards PIN using the correct PUK.... The phone starts, boots up and then it tells me the SIM in not valid. Network locked I need a PUK.

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