Develop Bugs

[Q] problem with network lock

i brought my galaxy nexus in ireland on vodafone bill pay，and now i need to go abroad for a month and change the sim card, but my phone is locked to vodafone, and i can get the network access code in 6 months because of the contract.
so is there anyone can help me with this?
thanks in advance!

butcher977 said:
i brought my galaxy nexus in ireland on vodafone bill pay，and now i need to go abroad for a month and change the sim card, but my phone is locked to vodafone, and i can get the network access code in 6 months because of the contract.
so is there anyone can help me with this?
thanks in advance!
Click to expand...
Click to collapse
Contact vodafone for an unlock code or contact the ebay guy in the main sticky who you can get the same code off of (in minutes usually) for a small price

animaleyes76 said:
Contact vodafone for an unlock code or contact the ebay guy in the main sticky who you can get the same code off of (in minutes usually) for a small price
Click to expand...
Click to collapse
im really confused , the page of requiring unlock code doesn't show up when i put in another sim card, there's no place for me to put in the code

butcher977 said:
im really confused , the page of requiring unlock code doesn't show up when i put in another sim card, there's no place for me to put in the code
Click to expand...
Click to collapse
This. I have the same problem (different country and carrier). I put in a different SIM and no place for me to add an unlock code (if I get one).

depends on where you are going to and what you will be using the most.
i use VF passport and euro data, keeps costs down quite a bit although if you are going to be hammering the data then a 'local' sim card might be best
can you not just get a 'local' vf sim for where you are travelling to? it might work

dipson626 said:
This. I have the same problem (different country and carrier). I put in a different SIM and no place for me to add an unlock code (if I get one).
Click to expand...
Click to collapse
can u get the unlock code from your carrier?

is the GN actually locked to vf? have you tried a different sim in it?

jonny_rubber said:
is the GN actually locked to vf? have you tried a different sim in it?
Click to expand...
Click to collapse
yes ,im pretty sure abt that,
and im going to china where the vodafone passport does not cover,so i have to get a local one to save cost

I haven't bothered asking my carrier because I'm not even prompted for a code when adding a different SIM. I wouldn't know what to do with it if I had it.
Sent from my Galaxy Nexus using xda premium

mine asked me when i put a new sim in but the instructions from the guy slelling the codes suggested the following in his email
"To unlock your phone, please put a SIM card from another network that not same as your phone locked to, then input the unlock code above. You might need to disable or input your simcard's PIN first before entering the unlock code.
You can also try dialing #7465625*638*# and then input the unlock code."

butcher977 said:
yes ,im pretty sure abt that,
and im going to china where the vodafone passport does not cover,so i have to get a local one to save cost
Click to expand...
Click to collapse
ah thats a shame.
I would try a different sim in it anyway just to be sure as i am sure i read that the GN would be unlocked

i just called the vodafone adviser and he said my friend who is eligible to unlock a phone can unlock my phone for me .sounds great to me

jonny_rubber said:
ah thats a shame.
I would try a different sim in it anyway just to be sure as i am sure i read that the GN would be unlocked
Click to expand...
Click to collapse
r u sure about the "unlock" is for network instead of the lock of bootloader?

animaleyes76 said:
mine asked me when i put a new sim in but the instructions from the guy slelling the codes suggested the following in his email
"To unlock your phone, please put a SIM card from another network that not same as your phone locked to, then input the unlock code above. You might need to disable or input your simcard's PIN first before entering the unlock code.
You can also try dialing #7465625*638*# and then input the unlock code."
Click to expand...
Click to collapse
ill try when i got the unlock code ,thanks!

this is what it says regarding the NUC
We’ll supply a Network Unlock Code (NUC) for you if you've bought a phone from us on either pay monthly or pay as you go. An NUC allows you to use non-Vodafone SIM cards with your Vodafone phone. If the unlock code is held in our systems, you’ll receive the unlock code and instructions by email within 24 hours. If the unlock code isn’t held by us, you’ll get an email confirming your request has been received - and that the turnaround time is 48 hours for all makes except Samsung, which is 7-10 working days.
You can only get unlock codes for the numbers on your account. If you have two mobile numbers on your account, then you can get two free unlock codes. There’s usually no charge for these network unlock codes.
Most pay monthly phones and devices are not network locked. Before requesting a network unlock code, please try a non-Vodafone SIM card and check for error messages.
so if you have a different sim lying about or a friend on a different network give it a try i would give it a go but all my work sims went back to the office for christmas

jonny_rubber said:
this is what it says regarding the NUC
We’ll supply a Network Unlock Code (NUC) for you if you've bought a phone from us on either pay monthly or pay as you go. An NUC allows you to use non-Vodafone SIM cards with your Vodafone phone. If the unlock code is held in our systems, you’ll receive the unlock code and instructions by email within 24 hours. If the unlock code isn’t held by us, you’ll get an email confirming your request has been received - and that the turnaround time is 48 hours for all makes except Samsung, which is 7-10 working days.
You can only get unlock codes for the numbers on your account. If you have two mobile numbers on your account, then you can get two free unlock codes. There’s usually no charge for these network unlock codes.
Most pay monthly phones and devices are not network locked. Before requesting a network unlock code, please try a non-Vodafone SIM card and check for error messages.
so if you have a different sim lying about or a friend on a different network give it a try i would give it a go but all my work sims went back to the office for christmas
Click to expand...
Click to collapse
all i have now is a chinese sim card, and a friend who has the same problem as me.when i put the chinese sim into my friend SE xperia arc ,the page of error and requiring a unlock code pop out and the signal is full. but when i did it to mine ,there was nothing i just go straight to the home page and, undoubtedly ,no signal no network cant make calls

are you in china now?
what happened when you put the chinese sim card into the gn? did you get any messages or any signal displayed etc? is the sim card activated?
(i had problems with my SE x10 in europe)

jonny_rubber said:
are you in china now?
what happened when you put the chinese sim card into the gn? did you get any messages or any signal displayed etc? is the sim card activated?
(i had problems with my SE x10 in europe)
Click to expand...
Click to collapse
no ,im in ireland
google brand-animation-loading apps-go to lock screen says "emergency calls only"at the bottom-after unlock the screen it goes to homescreen-when i trying to make a phone call ,it says mobile network not available

my GN says 'emergency calls' until its unlocked then it goes to the homescreen.
when you unlock the phone does it display any sort of signal strength or not?
there might be something odd with using a chinese sim card in ireland, can you try a sim card from one of the other Irish operators?

jonny_rubber said:
my GN says 'emergency calls' until its unlocked then it goes to the homescreen.
when you unlock the phone does it display any sort of signal strength or not?
there might be something odd with using a chinese sim card in ireland, can you try a sim card from one of the other Irish operators?
Click to expand...
Click to collapse
no signal at all
i dont have any now

Galaxy Nexus Successful Unlock (Bought Code)

Hello!
I have an NTT Docomo branded Galaxy Nexus.
Wanted to use a roaming sim so I needed to unlock it.
Checked some sites and finally decided to use the service from this site:
http://samsungimeiunlock.com/
I payed around $32 for the code(depends on which carrier your handset is locked to).
I would have happily donated it to a team who can sim-unlock our phones but I did not have the time to wait since I badly needed to use my roaming sim.
I received the codes in around 8 hrs.
First time using the code worked without problems.
I am not in any way connected to the site I mentioned above.
I just want to help those who are doubting online sites that provide unlock codes.
I guarantee the one I listed above works, and again, I am not in any way connected to the site.
Hope this helps and clears some doubts.
Peace yah all and enjoy your GNs!
P.S. - I unlocked the bootloader, rooted and flashed stock Google ICS 4.0.2 (not Docomo image) prior to inputting the code. Not sure if it would matter though.

If you had unlocked your bootloader then flashed a custom ROM then their would be no need to buy an unlock code would their

cordell507 said:
If you had unlocked your bootloader then flashed a custom ROM then their would be no need to buy an unlock code would their
Click to expand...
Click to collapse
of course there is.
unlocked bootloader is not the same as sim-unlocked/sim-free

cordell507 said:
If you had unlocked your bootloader then flashed a custom ROM then their would be no need to buy an unlock code would their
Click to expand...
Click to collapse
You should Google 2 things and read.
1. "Unlock bootloader"
2. "Unlock sim"
Sent from Galaxy Nexus (GSM)

I'm curious about one thing. Obviously I don't expect you to send me a copy of your unlock code, since I have a CDMA version and it won't do me any good. I'm just curious about the actual process of using it. Do you just punch in a bunch of numbers into the dialer, or what? Like what is the actual process to do this?

Turn off phone, insert foreign SIM, turn on phone, phone will ask for unlock code. 99% of GSM phones are like this.
Sent from Galaxy Nexus (GSM)

hey guys quick question. i have the gsm version unlocked pentaband. will this work with ntt's network okay? 3g and hspa+? i dont know if their frequency is part of this gsm unlocked one.
thanks

K.AuthoR said:
I'm curious about one thing. Obviously I don't expect you to send me a copy of your unlock code, since I have a CDMA version and it won't do me any good. I'm just curious about the actual process of using it. Do you just punch in a bunch of numbers into the dialer, or what? Like what is the actual process to do this?
Click to expand...
Click to collapse
as nxt mentioned, just insert a SIM that isn't from the network your handset is locked to.
it will ask for the unlock code after booting up.

EVOXGSR said:
hey guys quick question. i have the gsm version unlocked pentaband. will this work with ntt's network okay? 3g and hspa+? i dont know if their frequency is part of this gsm unlocked one.
thanks
Click to expand...
Click to collapse
sim-unlocking doesn't change any of your phone's capabilites. it just lets you use other sim cards, including your original one

[Q] Rooting vs Unlocking ?

This is the first android phone I have, so I hope I am not asking stupid question.
I purchased a tmobile S3 seperately with a not qualified data plan. (the old 2G plan).
Whenever I access the internet , tombile will ask me to change plan instead of the page.
I am now thinking to unlock.
1. Is Rooting = unlocking the phone?
2. What is the best and safe way to Root the phone?

Rooting gives the user access to system files. Unlocking allows your device to function with other SIM cards.
Sent from my SGH-T999 using Tapatalk 2

elesbb said:
Rooting gives the user access to system files. Unlocking allows your device to function with other SIM cards.
Sent from my SGH-T999 using Tapatalk 2
Click to expand...
Click to collapse
So after rooting i need to do an unlockingprocess? do u have a good tutorial?

You only need to unlock if you plan on using a different carrirer. Youll need to purchase an unlock code
Sent from my SGH-T999 using xda app-developers app

To unlock dial 611.

kingfung_lam said:
So after rooting i need to do an unlockingprocess? do u have a good tutorial?
Click to expand...
Click to collapse
If you bought your phone thru T-Mobile you can call T-Mobile and ask them for the unlocking code. I simply told T-Mobile I was traveling to Europe and wanted to put a European sim card in my phone and use it over there which was true. Within 24 hours I was sent the unlocking code. I can now put just about any sim card into my phone and I am all set. I can also put AT&T's sim card in my phone and get their HSPA+ network without any problems. No rooting needed, just unlock the phone, put the AT&T sim card in and the T-Mobile SGS3 is on the AT&T Network. The T-Mobile version of the SGS3 IMO is the most versatile version of the SGS3, you can get it with 32GB of int memory, 2GB of ram and use it on all Networks, The T-Mobile SGS3 is the only version of the SGS3 that can do all these things.

Rooting is basically the same thing as "jailbreaking*". It removes the restriction to having all files acessable on the phone. Nothing more nothing less.
And unlocking is when you want to use a simcard from a different carrier on your phone.
Sent from my SGH-T999 using xda app-developers app

kingfung_lam said:
So after rooting i need to do an unlockingprocess? do u have a good tutorial?
Click to expand...
Click to collapse
If you call T-Mobile and ask them for the unlock code, they'll email you the unlock code so you can unlock the phone. I've done it before with my MyTouch4G and am going to call them to unlock my SGS3, as I travel to Canada and use Rogers SIM cards.

Verizon SIM in CARRIER UNLOCKED T-Mobile s8+ not working

Hi
I have a carrier unlocked T-Mobile s8+ and need to use a Verizon SIM in it and am getting errors trying to use a verizon SIM. The Verizon SIM is from another phone and is already registered. I put the IMEI number of the phone into Verizons web portal to test compatibility and it failed. Does that mean there is no way to get this combination to work? Does the IMEI need to be in the VZW database for this to work? Will flashing XAA guarantee this to work? Thanks for any help and advice.

sideswipe said:
Hi
I have a carrier unlocked T-Mobile s8+ and need to use a Verizon SIM in it and am getting errors trying to use a verizon SIM. The Verizon SIM is from another phone and is already registered. I put the IMEI number of the phone into Verizons web portal to test compatibility and it failed. Does that mean there is no way to get this combination to work? Does the IMEI need to be in the VZW database for this to work? Will flashing XAA guarantee this to work? Thanks for any help and advice.
Click to expand...
Click to collapse
do u have a tmobile phone, it is different than the carrier unlocked phone, those are 2 different models,
the carrier unlocked.. the sim is unlocked..
the tmobile is not carrier unlocked, and by flashing the firmware of the unlocked version, will NOT unlock the sim.. u will need to device unlock app with the tmobile phone 1st... and usually tmobile will NOT unlock unless u have paid it off and using on their system for 40 days..
others like me had it unlocked with days of service, cause we are tmobile customers for years already... I on the other hand bought the phone on ebay from someone who bought it from Samsung and the imei was not added to tmobile system and I had to call tmobile to add the imei which took about 3 days, then to call back to request the sim unlock which took another 3 days, the device unlock app unlocked the phone instantly...
that was my process for me to get the sim unlock... but if urs it not unlocked and is paid off, another way to get it unlocked it to give it to someone u know, let them use it and call tmobile to start the above process...
Hope that sums up what must be done...

mdiaz33685 said:
do u have a tmobile phone, it is different than the carrier unlocked phone, those are 2 different models,
the carrier unlocked.. the sim is unlocked..
the tmobile is not carrier unlocked, and by flashing the firmware of the unlocked version, will NOT unlock the sim.. u will need to device unlock app with the tmobile phone 1st... and usually tmobile will NOT unlock unless u have paid it off and using on their system for 40 days..
others like me had it unlocked with days of service, cause we are tmobile customers for years already... I on the other hand bought the phone on ebay from someone who bought it from Samsung and the imei was not added to tmobile system and I had to call tmobile to add the imei which took about 3 days, then to call back to request the sim unlock which took another 3 days, the device unlock app unlocked the phone instantly...
that was my process for me to get the sim unlock... but if urs it not unlocked and is paid off, another way to get it unlocked it to give it to someone u know, let them use it and call tmobile to start the above process...
Hope that sums up what must be done...
Click to expand...
Click to collapse
Hi thanks for the explanation, I am pretty familiar with the differences between carrier (SIM) unlock and unlocked firmware as I have flashed Android in the past. I had the phone carrier (SIM) unlocked by T-Mobile through their app and I was still not able to use the Verizon SIM in my phone (not registered error). It turns out (and I found this out by reading through the many messages in this forum) that T-Mobile firmware apparently disables some frequencies that other carriers may use. Once I flashed the XAA unlocked *firmware*, I popped in my Verizon SIM and it worked like a charm. I hope this info is useful to someone at some time and I thank all of you for your contributions to getting this working. KUDOS!

sideswipe said:
Hi thanks for the explanation, I am pretty familiar with the differences between carrier (SIM) unlock and unlocked firmware as I have flashed Android in the past. I had the phone carrier (SIM) unlocked by T-Mobile through their app and I was still not able to use the Verizon SIM in my phone (not registered error). It turns out (and I found this out by reading through the many messages in this forum) that T-Mobile firmware apparently disables some frequencies that other carriers may use. Once I flashed the XAA unlocked *firmware*, I popped in my Verizon SIM and it worked like a charm. I hope this info is useful to someone at some time and I thank all of you for your contributions to getting this working. KUDOS!
Click to expand...
Click to collapse
Good to know, but sound weird, thought T-Mobile phones work for all gsm Sims just needing to change apn,
But now cdma merging with gsm, that's so much better as far as phones go, use any phone now from any provider.
Look how the s8 plus is all the same software and the same hardware, just different carrier stuff..

mdiaz33685 said:
Good to know, but sound weird, thought T-Mobile phones work for all gsm Sims just needing to change apn,
But now cdma merging with gsm, that's so much better as far as phones go, use any phone now from any provider.
Look how the s8 plus is all the same software and the same hardware, just different carrier stuff..
Click to expand...
Click to collapse
I thought it was weird too. Busted my head for a couple of days trying to figure it out. Is Verizon still CDMA? *scratches head*

Yes, their 3g and 2g networks are CDMA.

If you insert Verizon sim into T-mobile phone, you'll get LTE data, but you won't be able to make calls. Only data will work. T-mobile firmware support band 2, 4 and 13, so you should have data, but not phone service. If you don't have data icon, you'll need add Verizon apn.

FYI
Flashing the phone with G955U1 firmware fixed this issue. I am now able to use this successfully on Verizon.

How am I unlock my pixel 3a XL to all carrier

I have a locked mobile (T-mobile) , how am I unlock my pixel 3a XL to all carrier
I would love to receive step by step answers whenever possible Help!
Thanks in advance,
Reuven

You must get T-Mobile to carrier unlock the phone. They are the only ones that can do it. However, if you still owe money on the phone, you will have a hard time getting them to agree to unlock it. Honestly the most successful method I have seen is to reach out to the main T-Mobile account via a direct message on Twitter. Explain that you need to get a carrier unlock and see what they say.

sic0048 said:
You must get T-Mobile to carrier unlock the phone. They are the only ones that can do it. However, if you still owe money on the phone, you will have a hard time getting them to agree to unlock it. Honestly the most successful method I have seen is to reach out to the main T-Mobile account via a direct message on Twitter. Explain that you need to get a carrier unlock and see what they say.
Click to expand...
Click to collapse
thanks a lot for the answer
1. I don't have a T-MOBILE sim
2. Is there no way to replace / override the existing operating system
3. Is there no software capable of hacking the system

Reuven Brenner said:
thanks a lot for the answer
1. I don't have a T-MOBILE sim
2. Is there no way to replace / override the existing operating system
3. Is there no software capable of hacking the system
Click to expand...
Click to collapse
The first hurdle before you can do anything with the os is bootloader unlock. That it's not possible work a T-Mobile phone without T-Mobile doing it. Good luck.
Sent from my Pixel 3a using Tapatalk

I hate that a person's banner doesn't appear in the OP, so I didn't realize you were in Tel Aviv. Again, I think the best option is to reach out to T-Mobile on Twitter and explain that you acquired this phone, but you live in Tel Aviv and need them to sim-card unlock the phone so that you can use it on a local service. They may give you a hard time if there is still money owed on the phone (ie bought on an installment plan), but it the phone was bought outright, or if you pay off the balance on the phone, they definitely should sim-card unlock it.
Once it is sim-card unlocked, you can then bootloader unlock it which will give you the ability to install custom ROMs, kernels, etc.

Buy an unlock code from any service out there. Slam your new SIM card in and input your unlock code

Anyone know more ways to deal with the issue?

thatsupnow said:
Buy an unlock code from any service out there. Slam your new SIM card in and input your unlock code
Click to expand...
Click to collapse
Can you recommend a reliable site that knows how to service and not just take the money

you can try to merge the backup from a fully unlocked phone using qpst program and upload it via edl mode to your phone

Reuven Brenner said:
I have a locked mobile (T-mobile) , how am I unlock my pixel 3a XL to all carrier
I would love to receive step by step answers whenever possible Help!
Thanks in advance,
Reuven
Click to expand...
Click to collapse
Dirty secret.... Call and tell them you're someone either famous or C level of a company and you're going to be landing in whatever country and you need your phone unlocked immediately to use a local sim for business purposes. If or when they question the account name it's just the account of your assistant to obscure your identity. Major Telecoms won't tell you about this but I can tell you 100% from experience this is how things work. Well I can't at least say with at&t, Verizon, TMobile and Sprint. As in I've seen the tools with my eyeballs.

yashkoff said:
you can try to merge the backup from a fully unlocked phone using qpst program and upload it via edl mode to your phone
Click to expand...
Click to collapse
thanks a lot for the answer
You can send me step by step how to do this to my email
[email protected]
I thank you very much
Small note:
My ROOT and BOOTLOADER are locked

So I'm kind of in the same boat. I just purchased one that is sim locked to Verizon. I have seen things about leaving a Verizon sim in it for 24 hours and it will unlock, luckily my work phone is Verizon so I'm testing this theory.
But can anyone tell me if this is permanent? Will it survive factory resets and such?