Phones often ship with a SIM lock that ensures they can only be used with a single carrier. Unlocking a phone allows it to be used with any carrier.

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7 views

How does SIM unlocking work under the hood?

I know what SIM unlocking is and how to do it, but my question is how does SIM unlocking work under the hood? What is actually going on that prevents me from just popping another carriers SIM in ...
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0answers
25 views

Need sim mi unlock codes. havnt tryed to unlock at all [closed]

EMI: 863962028658448 HAUWEI Y330-U01 Just need codes to unlock from Vodafone to all service networks
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0answers
30 views

Do I need to unroot my phone to unlock my phone?

I received an unlock code for my Samsung Galaxy S3, which didn't work when I typed it in. The 3rd party I got the code from told me that you cannot unlock a phone if it is rooted, and I should install ...
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0answers
26 views

HTC inspire 4G unlocking from AT&T network

how do I check if my htc inspire 4G is unlocked. I tried putting another sim card intothe phone but it did not work so what do I do next to check if the phone is already unlocked
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0answers
39 views

Unlocking htc one m8 T-Mobile

I'm looking to buy a HTC One M8 T-Mobile version, and unlocking it. I read on gsmarena.com that the frequencies that work on that phone are these. GSM 850 / 900 / 1800 / 1900 HSDPA 850 / 1700 / 1900 ...
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0answers
44 views

Phone antitheft lock on tecno m3

I changed Sim cards on my tecno m3, and it sent a message to my message contacts and locked the phone. I couldn't remember the code so I put the Sim card back. But it didn't work
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0answers
44 views

Can I unlock and use my AT&T Galaxy S5 in South Korea? [duplicate]

My AT&T contract is expiring in July, which is also when I'm moving to South Korea. I want to use my Galaxy S5 (AT&T version) in Korea after unlocking it and signing a contract with a local ...
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0answers
141 views

Unlock code for Galaxy S3 not working

I have a Samsung Galaxy S3 with an o2 (UK) netlock. I got an unlock code from o2 but it doesn't work. It just returns a "network unlock request unsuccessful". It's on 4.3 and tried doing a factory ...
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1answer
64 views

My Rooted Note 4 needs a new carrier

I have a galaxy note 4 from T-Mobile the phone is rooted. Now I need to switch carriers to At&t. I have the code to unlock the phone but I need to know (if I put the new at&t Sim-card in my ...
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0answers
12 views

How To Separate a Device From Its Service Provider? [duplicate]

I was wondering of any one knows, if you can change the provider from Verizon to AT&T or Sprint? If it's a Version phone is it always a Verizon phone?
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0answers
54 views

No data or mms on Sprint Galaxy S3 flashed to verizon

A couple months ago, I cloned my Verizon LG octane with my sprint s3. So far it has been good, as far as voice and text goes, but I still haven't been able to get mms or data to work(3g). I think that ...
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0answers
223 views

Unlock a Samsung Galaxy Note 3 SM-N9005

As the title says, im wanting my note 3 unlocked from the 3 (three) network in the UK. I understand the Samsung unlock servers are down which is why i haven't done it myself, but also understand ...
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1answer
35 views

how can i unlock my locked screen of lg p 500

my screen locked after too many attempts but my volume key is also not working for hard reset. can any body have idea? due non working condition of my volume keys i am unable to hard reset.
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0answers
9 views

unlocked bootloader = sim unlock? [duplicate]

I have a motorola G phone and as part of the developer program I can unlock bootloader of the phone. I am just wondering does this mean I am SIM-unlocked as well? i.e., I can take the phone ...
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0answers
189 views

Retrieving lost SIM PIN and PUK

If the SIM and PUK are stored on the SIM card, then why can't an Android application read this information and display it to the user? Thanks.
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0answers
211 views

Disabling/Changing PIN on Android device: where are the disabled flag and new PINs stored (SIM or internal storage)?

On my Samsung Galaxy SIII, one can go to Settings -> More -> Security -> SIM card lock -> Set up SIM card lock -> Lock SIM card` which displays a check box which can be used to configure the phone to ...
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1answer
217 views

Possible to change SIM card PUK on Android device?

On my Samsung Galaxy SIII, one can go to Settings -> More -> Security -> SIM card lock -> Set up SIM card lock -> Change SIM PIN to change the default PIN that came with the SIM card. ...
0
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1answer
124 views

Why am I not receiving network signals on a Samsung S3 T-999?

I just bought a Samsung S3 T-999. The problem is when I switch the cellphone on, it connects to my network but just for a second. The moment that second is gone, I lose signal completely. So it's not ...
0
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1answer
2k views

Both Sims are not detected after update Lenovo A390 with the latest ROW firmware

I have format my Lenovo A390 and update to latest ROW firmware version A390_ROW_S316_130730. Everything work fine but sim cards not detected. At down of the lock screen shows Invalid IMEI. In the ...
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0answers
62 views

Htc does not recognize any sim cards

I have a HTC wildfire that i am using as a replacement phone until my contract is up as my former phone is broken. It works fine however wont detect ANY sim cards i use. I have tried an o2 and two ...
0
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0answers
150 views

unlock remotely locked phone with android device manager

I remotely locked my phone with android device manager and forgot the password, data connection of the phone is also off, what should i do now,
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0answers
28 views

GSM International Galaxy HELP

I have a GSM Unlocked Galaxy MEGA, but it's all in Chinese letters. I factory reset the phone but it still had the chinese apps and everything. It is also missing some device apps like the Play Store. ...
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1answer
357 views

I've exceeded my unlock attempts (10). Is there any way to unlock my phone?

Due to AT&T being a horrible company, I believe the customer "service" has led me through more than my allotted attempts at unlocking my phone. Because my phone was refurbished, the attempts may ...
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0answers
137 views

problems unlocking bootloader of xperia z3

i'm trying to unlock bootloader of my xperia z3 but i'm encountering problems. I followed the instructions on sony's site and i got to the point where i have to connect the phone in fastboot mode to ...
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0answers
622 views

how to unlock O+ 8.91 inorder to enable to mobile data connetion

i have O+ 8.91 with dual sim and sim 1 is locked to sun cellular sim only..and only sim 1 can connect to mobile data connection. I just want to know how to unlock sim 1 so that i can connect to ...
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1answer
2k views

Unlocking SIM card Huawei Ascend Y530

I recently bought Huawei Ascend Y530 which is SIM-locked in a swiss provider, swisscom that is. I checked through the web to find how can a sim-locked phone be used with any sim, but surprisingly I ...
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0answers
393 views

HTC Desire 816 dual sim - how to activate slot1 in roaming settings?

One of my sim card slots on my HTC desire 816 is not active and doesn't identify inserted sim card. I noticed that on the inactive slot1 settings, there is a number listed at bottom. How can I use ...
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0answers
45 views

ServiceProvider eating my battery after SIM unlocking

I had my Samsung Galaxy S3 SIM unlocked last week. It runs a rooted Android 4.1.2. Since then, I've noticed that ServiceProvider is consuming much more battery that I have ever noticed before. Can ...
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0answers
148 views

How to unlock message on HTC EVO

I have forgotten the password for secure messages on my HTC EVO. How do I unlock the message secure box on a HTC EVO to get secured messages without deleting the messages. Is there an app that can do ...
0
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0answers
11 views

Pre-rooted custom rom for unlocked xperia neo v mt15i [duplicate]

I have unlocked bootloader xperia neo v mt15i, version 4.0.4, build 4.1.B.0.587. I would like to flash pre-rooted custom ROM. Need custom rom link and step-by-step guide.
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2answers
49k views

How can I check whether my phone is network locked (Samsung GALAXY S3)?

I have a Samsung GALAXY S3 with a rooted Android 4.1.2. My network provider is AT&T. I tried dialing *#7465625# but it doesn't work:
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0answers
277 views

Cyanogenmod unlocked phone requires network unlock code

I have a Sony Ericsson Xperia Arc that I installed Cyanogenmod (v. 9.1.0-anzu). The phone is not locked to a specific network as a) the danish operator where I bought the phone does not do this and b) ...
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0answers
259 views

Service Mode says Network Lock Not Active

I have accessed the service mode and gotten to Network unlock. When I click on the network unlock, the phone responds with "Network Lock Not Active". When I try to use the phone it"s still asking for ...
0
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0answers
11 views

Galaxy S5 unlock + change region [duplicate]

I have an stock, locked, Telstra Australian Galaxy S5 and I'm about to live in the UK. I would like to know if there is currently a way to unlock it without code so I can use it with an English ...
0
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0answers
155 views

Data works on my phone, internet doesn't?

I recently unlocked my Android phone for an international move, and got a local SIM card. Currently, all 'data' functions are working in apps - Tango, Facebook, Google search, etc. However, the ...
0
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1answer
375 views

Does having CWM mean bootloader is unlocked?

I flashed CWM using Rom Manager. Does this mean that my Galaxy S4 bootloader is unlocked? I'm using Samsung Galaxy S4 (SGH-I337M) (Canadian Telus)
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2answers
193 views

SIM lock question

I intend to buy a new sim-unlocked at&t LG G2. So I want to know is there a possibility that an update will ever relock it again? Am I free to root it and install custom roms without relock ...
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0answers
178 views

Xperia Miro fastboot wont work

I've been following the official sony's unlockbootloader tutorial and I'm stuck on a problem that I cant seem to fix. To use my unlock code, I have to Turn off the device Connect the usb cable ...
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4answers
9k views

Is a device Unlock Code required when changing providers?

So... I just switched from AT&T to Cricket Wireless. They gave me a new SIM, and AT&T gave me an Unlock Code. I have an Android Samsung Galaxy Skyrocket S2. I use Cricket Wireless. I put in ...
0
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2answers
894 views

Will my phone (carrier unlocked but initially locked to verizon) get locked after Kitkat update?

I've bought Motorola Droid Razr M from eBay. It is locked with Verizon by default, so seller unlocked device for me and it is working fine. It comes with Jelly bean 4.1.2 and I found that Kitkat ...
0
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0answers
497 views

Need help in unlocking LG G2 LS980ZVC, running on KitKat

I am looking for a working link to a tutorial explaining how to globally unlock LG G2 LS980 (Android Version 4.4.2, Software Version LS980ZVC). I tried several, but can't unlock the phone. Most ...
1
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1answer
11k views

How do you SIM-unlock the SGH-I317 (AT&T Samsung Galaxy Note 2) on Jelly Bean 4.1.2?

I have looked all over the internet, and a lot of the download links and information has gone stale, or is incorrect. I wanted to standardize it here for other people.
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2answers
35k views

Network Unlock Code vs SIM Unlock PIN [closed]

I bought an unlock code from http://www.unlockcode4u.com because my phone was asking for it (Enter PIN Code) I got the code and it does not work. Actually only allow me to enter 4 digits. Now this ...
1
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2answers
5k views

Will flashing other region's ROM unlock GT-I9515?

I bought a Samsung S4 GT-I9515 from Saudi Arabia. But returning to my country found that this phone is locked and I don not know of any unlock code. It is also not possible to contact the seller in ...
0
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2answers
3k views

Htc one m7 International not recognized in adb mode

I have an htc one m7 running bootloader hboot 1.56. I unlocked the bootloader via htcdev.com The bootloader now shows Unlocked My phone is recognized in adb when the phone is turned on. But when i go ...
0
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0answers
1k views

Any way to unlock T-Mobile ZTE V768?

A friend of mine purchased a ZTE V768 Concord from ZTE. It was not under any contract, but it is still locked to use any foreign SIM-card anyways. We are far away from the US, so is there any way to ...
0
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1answer
182 views

Can you unlock brand new phones?

I saw a cheap Verizon HTC ONE M8 on eBay, but I am on AT&T. If I was to get that phone, could I unlock it straight away? I thought I remember hearing somewhere that you can't unlock phones for a ...
2
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2answers
176 views

Will a Factory Reset on an unlocked Samsung S2 4G T989 from T-Mobile relock the phone?

I have a Samsung S2 4G T989 from T-Mobile which is unlocked. It is currently using ion Indian carrier. I want to Factory Reset it. Will it be locked again after performing a reset? I don't have any ...
1
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2answers
13k views

adb sideload does not transfer data

Just to clarify, it's my first time trying to unlock and root my phone, so I'm not very knowledgeable in this matter. I basically followed the steps to unlock the bootloader. Everything worked ...
1
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0answers
94 views

Droid Mini in France with local SIM card?

I have a Droid Mini bought in America with Verizon that I'd like to be able to use in France. It's supposedly one of their "Global Ready" phones, so using it here should be as simple as getting a new ...