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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14
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2answers
13k views

Do custom ROMs like CyanogenMod modify your bootloader?

Does a custom ROM like CyanogenMod come with their own bootloader or does it just overwrite the /boot kernel and /system? Does the bootloader take responsibility to lock your SIM card on a carrier? ...
11
votes
2answers
2k views

What is the difference between jailbreaking and unlocking an Android? [duplicate]

Possible Duplicate: What is the difference between: Rooting, Jailbreak, ROM, Mod, etc Is either possible, legal, contractually legit and does either damage the phone?
9
votes
2answers
5k views

Can you use the Nexus 4 without a SIM card?

I currently have an iPod Touch, I want to buy the Nexus 4, but don't want to get a plan (SIM Card) for a while. Will the device work like an iPod Touch/ Wifi capable, but no access to data away from ...
8
votes
2answers
10k views

Will resetting my unlocked phone to factory settings lock it again?

I have an unlocked G1 that is freaking out on me in various ways. If I "restore factory settings" am I going to wind up locking it?
8
votes
2answers
4k views

Where Are The Sim-Lock Settings Stored on an android phone?

After getting more involved with the "aftermarket" community I have this question that's been on my mind for a while now. Since rooting and flashing a custom rom on an android phone doesn't give one ...
7
votes
3answers
1k views

Is there a free way of unlocking an Android phone from a particular network?

I bought a cheap Android handset for development and it is an exclusive to a particular network. I would like to unlock it so I can use an existing SIM card from another network. I've done some ...
5
votes
1answer
2k views

I cancelled SIM unlock and now I cannot unlock the device

When I inserted SIM card into my phone I tapped the "cancel" button, assuming that it would be possible to unlock it later. But I fear that my assumption was wrong. The device is a Sony Ericsson ...
5
votes
1answer
603 views

Android and sim-lock

I'd like to know if android phones are sim-locked. Given that they are open-source and have community images it should be 'tricky' to sim-lock one but I prefere to ask. Also - do I need to unlock if ...
4
votes
1answer
1k views

Does unlocking a phone from a Network allow manufacturer updates?

I am having a major problem with Three network not pushing the latest 1.29 update for my HTC One X phone. If i get them to unlock it will that enable me to download the update that HTC have released ...
4
votes
4answers
1k views

How to unlock a “network sim” in order to use a Android phone?

I got an old Android phone (HTC MyTouch) from someone in the States. The phone says "T-Mobile" on the top. I put in my O2 SIM chip (Germany), turned it on, typed in the SIM, but then it asks me to ...
3
votes
4answers
13k views

How can I remove the SIM lock from a Samsung Galaxy S?

I bought one from bell Canada, and I can't put in a SIM card from any other service provider. Does anyone know how to unlock this phone?
3
votes
2answers
713 views

Will Samsung Galaxy Nexus i9250 work with Indian SIM Cards? [duplicate]

Possible Duplicate: Can I use my device on a different carrier? I understand that Samsung has stated they will not launch Samsung Galaxy Nexus i9250 in India and hence am planning to buy it ...
3
votes
1answer
823 views

Does Unlocking bootloader affect network lock?

Will the bootloader unlock procedure as shown on the HTC Dev website affect my network lock? I have an HTC Aria, which was originally SIM locked, but I got unlocked from a shop. Now, since I'm ...
3
votes
1answer
153 views

Can an unlocked Nexus One without a carrier be used as a standalone device?

I'm interested in playing around with the new open android open accessory development kits but don't want to pay a monthly fee for having a cell-phone. If I buy the Nexus One/S unlocked and forgo ...
3
votes
1answer
2k views

Why can't all rooted phones be unlocked?

I enjoy modding my phone with custom roms, kernel patches, and custom bootloaders. I know that the bootloader/recovery can be overwritten, as can pretty much any partition that exists on the phone. ...
3
votes
1answer
11k views

What is the unlock code for Motorola Droid Pro?

I brought my Motorola Droid Pro back from the USA to Switzerland. It has never been actively on any network, as i bought it through Amazon as a "spare phone" on a Verizon network. I never activated ...
2
votes
3answers
4k views

unlocked device vs. unlocked bootloader

I've always thought that if a device is unlocked it means that it works with different carriers. If the device bootloader is unlocked, then does this mean the device will automatically work with ...
2
votes
2answers
1k views

set another CDMA operator in a verizon wireless galaxy tab

Got a galaxy tab 7 SCHI800BKV verizon wireless tab. It has no rim/sim port. Question is if I root the device will it be possible to set my country's CDMA operator in the device? Thanks for your help. ...
2
votes
4answers
1k views

Is it possible to unlock my Samsung Galaxy 3(GT-i5801)?

I moved to another country and absent-mindedly bought a SIM card for my GT-i5801 (from Orange UK) Now it's asking for a network lock code. I have searched the net and everything points to me going to ...
2
votes
2answers
277 views

Can the Nexus 7 LTE connect to 3G networks?

Is it possible to connect to 3G networks with the Nexus 7 LTE? Is it possible with an unlocked device or only with limited networks or standards? I've tried to Google it but no one seems to have ...
2
votes
1answer
436 views

How to port a SIM card to an Android phone

The procedure for porting a SIM card from a pay-as-you-go phone to an iPhone 4 is well documented (example 1, example 2, config tool for iOS 5). This is a nice option for people mostly on WiFi who use ...
2
votes
1answer
2k views

How can I configure an unlocked HTC Sensation XE for 3g connectivity in USA?

I bought this phone in India and brought it home to USA. In India I had no issues in connecting to 3G network but after coming back to USA I am no longer able to connect to 3G network (AT&T). I ...
2
votes
1answer
2k views

How to unlock a Motorola Photon 4G for other carriers?

I won a Motorola Photon 4G. They are tied to Sprint, which is CDMA, but it is a world phone, which means it supports GSM and uses a SIM card. I was reading that there may be an unlock code to allow it ...
2
votes
1answer
383 views

I it necessary to SIM unlock my Samsung Galaxy S2 to use a custom ROM?

I want to upgrade my Galaxy S II to Android 2.3.5, and my provider only has 2.3.3. So I have to use a ROM from samfirmware.com. Do I have to SIM unlock my phone before installing one of these ROMs? Do ...
2
votes
4answers
138 views

How do I unlock an Optimus T? Is there a “vanilla” firmware I can use?

I'm an experienced iOS developer, and I just bought my first Android phone, used, on eBay. The phone is carrier locked and I'm looking to swap in my iPhone SIM card. (I have an adapter.) The phone is ...
2
votes
3answers
756 views

How can I unlock my HTC One V locked by 3 (UK Carrier, www.three.co.uk)?

I have a HTC One V which is provided by 3 (www.three.co.uk) under contract. I recently bought a Nexus 4 from Google Play because of the price drop, and I'm using my 3 SIM in the Nexus which is ...
2
votes
2answers
17k views

How can I remove the SIM lock from my Samsung Galaxy S Blaze 4G T-Mobile?

I got an Galaxy S Blaze 4G as a gift from USA. The phone is locked and did not accept any SIM card in my country (just for T-mobile). Instead it ask for a unlock code. Ts there any software way to ...
2
votes
1answer
271 views

Used code bought on internet to unlock Galaxy S3 from 3 UK to O2-UK. Will rooting the device harm it?

My Galaxy S3 was locked to 3-UK when I got it. So I used a code I bought on the internet to unlock it. When buying the code the form asked which network I wanted to unlock the handset for. I said ...
2
votes
1answer
385 views

Motorola Motoroi South Korea o South Africa change over

I have a Motorola Motoroi XT720 that I bought in South Korea. My service provider is SK Telecom. When I insert my South African sim card (Service provider Vodacom, and using the phone while in South ...
2
votes
0answers
283 views

Why can't the Sprint HTC One use GSM ROMs?

Everywhere I've looked, I've found that the HTC One physical hardware (USA) is the same regardless of the carrier--all models of the USA phone containing both CDMA and GSM radios. If this is the ...
2
votes
1answer
4k views

Does installing CyanogenMod lock device's network?

today after almost one year using the stock Android version on my Xperia Mini (ST15i, I was on Gingerbread) I decided to flash an official CyanogenMod ROM (CM7). So I first unlocked the bootloader of ...
2
votes
0answers
3k views

How to remove network lock samsung galaxy s advance

Title says it all. I have been scouting the net for the past day and a half and haven't found a way to remove/unlock the network lock on my SGS Advance. It is already rooted. I have tried those SGS ...
2
votes
2answers
111 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
vote
1answer
919 views

Does rooting a device and installing a custom ROM SIM unlock it as well?

I'm a bit confused about this topic. I have a T-Mobile myTouch 3G which I've recently replaced with a Nexus One so it's kind of standing there. I was contemplating rooting the myTouch and installing ...
1
vote
2answers
304 views

Samsung s3 Unlock

I bought a Samsung phone, on the T-Mobile carrier in the US. I went to India last week, and got my unlock code from T-Mobile. My India-Vodafone SIM is working fine, except for the internet. I have ...
1
vote
2answers
1k views

Unlocking an HTC HD2 after installing android

I recently bought an HD2, which originally runs Win6.5. But currently has a very modern version of Android installed. Is it necessary to re-install the original OS in order to unlock the phone?
1
vote
2answers
2k views

How to unlock Motorola Atrix 4G for other carriers?

I bought a Motorola Atrix 4G MB860 and discovered that it is locked. I received an unlock code from AT&T but I receive the message "network unlock code unsuccessful" which according to AT&T ...
1
vote
3answers
11k views

How can I unlock my Samsung Galaxy Ace?

I have just purchased a Galaxy Ace locked to a specific carrier. I was wondering if it is possible to unlock the phone for free without having to pay for it?
1
vote
1answer
1k views

Unlocked Galaxy i7500, Reset Will Remove it? [duplicate]

Possible Duplicate: Will resetting my unlocked phone to factory settings lock it again? I just purchased and unlocked a Samsung Galaxy i7500 using FastGSM's system. (It cost $20 and it's ...
1
vote
1answer
465 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.
1
vote
2answers
3k views

Unlock Motorola Droid Razr Maxx (Verizon)

I have a Motorola Droid Razr Maxx on Verizon in the US. I want to take it to Straight Talk, a MVNO that uses Verizon's network. I bought the Straight Talk SIM card, but I get an error that the phone ...
1
vote
1answer
864 views

Will my device get locked again after update?

I've bought samsung captivate glide I-927 from eBay. It is locked with at&t by default, so seller unlocked device for me and it is working fine. It comes with Gingerbread 2.3.5 and I found that ...
1
vote
1answer
692 views

Determing SIM/network/carrier lock status in software

Is there a way to determine if a Galaxy S3 (i747, running 4.1 JB, stock ROM, but with root) is currently carrier locked in software (i.e. without needing to obtain and insert a different network's ...
1
vote
3answers
11k views

Network unlock code not working

I have bought a used Motorola Defy (MB525), rooted, running CyanogenMod 9 (ICS 4.0.4). It is locked to work with only a specific carrier. I bought an unlock code, and unaware to this the previous ...
1
vote
2answers
23k views

How can you find which carrier a Samsung Galaxy S3 (GT-I9300) is locked to?

I bought a S3 and it came locked to an unknown carrier. All the unlock services require the information of which carrier the phone is locked to give me an unlock code. So, how can I find that out?
1
vote
2answers
3k views

Samsung Galaxy Gio network menu

I have a problem with my galaxy gio. It has a network lock (I think) and I've tried to unlock it. The problem is that I have the unlock code but the phone doesn't ask for it. It is there a menu or a ...
1
vote
1answer
149 views

Unlocking HTC HD2 and installing Android

I have HTC HD with Windows Mobile 6.5 installed and it is locked with Vodafone (Germany). If I want to install Android on it, do I have to unlock it first? Or it will be automatically unlocked in the ...
1
vote
2answers
164 views

Orange HTC Hero Unlock problems

Orange being the unhelpful company that it is, can't unlock phones in the shop. This was unfortunate as I was going overseas, but no matter, I called the helpline, and then was told it'll take three ...
1
vote
1answer
2k 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
vote
0answers
54 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 ...