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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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 ...
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0answers
93 views

Will upgrading a SIM-unlocked device re-lock it?

I have a Samsung Galaxy S3 T999. When I got it, it was locked to T-Mobile. I needed to unlock it, as I am not in America. I wanted to know if I perform an upgrade to Android 4.4.2, will my phone be ...
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2answers
28k 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?
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0answers
103 views

Where in the firmware does SIM lock checking occur?

What part of the firmware controls the SIM "lock" on Samsung Galaxy S III SGH-I747 (AT&T)? Are there any mods for that layer of firmware?
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0answers
69 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 ...
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4answers
2k 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 ...
8
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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 ...
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1answer
100 views

Changing carriers and sims - how do I know if the new network will work?

My family is considering switching to T-Mobile, and I would like to bring my current Droid 4 with me. I have already stopped by a local T-Mobile store to see if their sim would work. The phone ...
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0answers
317 views

IMEI null and Service mode blank

I just got a Samsung Galaxy Active SGH-I537. Trying to unlock it, I messed up the IMEI and am now getting the IMEI Null error message. I cannot get to the Service Mode, because it is blank. Is there a ...
3
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4answers
15k 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?
2
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0answers
354 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
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3answers
6k 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 ...
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1answer
932 views

Problems with a linsay f-10hd cosmos locked [duplicate]

so I have this tablet linsay f-10hd Specs 10.1 " 0S: 4.04 Google Android CPU: 1.5 Ghz CORTEX A-8 1 GB RAM 4 GB Hard Drive Internal Memory Web CameraBuilt in 3-D acceleration, 3-D Effect 2160 P HD ...
0
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1answer
70 views

Can an encrypted Android phone be unlocked with an USB drive some way?

I want a fast way to login to the system without entering difficult credentials. If the usb key is not present there won't be the ability to decrypt the system ... Some 2-factor solution without NFC ...
2
votes
2answers
517 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 ...
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0answers
106 views

Why branded firmware phone is unable to register on other networks?

I have galaxy S2 with cyanogen mod installed but I had to get rid of it due to charging and usability issues. SIM card worked fine with it (vodafone). Then I installed what looked to be unbranded ...
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0answers
126 views

How can I carrier unlock an HTC Droid Incredible (Verizon CDMA)

How can I carrier unlock an HTC Droid Incredible (Verizon CDMA)? Alternatively can I use a locked phone on a discount carrier that uses Verizon's network?
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1answer
165 views

Locked out with no service!

I was fiddling with the lock your SIM card features and locked it, but the password I used now will not open it, and it is locked with no service, screen says screen is PUK locked and is asking for ...
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1answer
155 views

Can I use my bootloader-locked phone with a different network?

I just bought an Xperia Z and the bootloader is locked. Do I need to unlock it in order to run it on a new SIM card and can I switch to Virgin? It's OK if I can't: I will just buy a Bell SIM for $10, ...
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1answer
788 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 ...
8
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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 ...
0
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1answer
442 views

Samsung Galaxy: Unlock gone haywire

I applied the procedure to unlock a Samsung Galaxy S3 on a Samsung Galaxy Express I437. It went through smoothly, and but the phone was not unlocked. Instead, it gives me the error message "Phone ...
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1answer
1k views

Can I unlock my Razr M (Verizon) for international use?

I have a Verizon Razr M that was given to me for free. It's a Verizon model, but it has never seen a network. (I use it as an WiFI android iPod touch for now) I know about CDMA/GSM/4G and all that. ...
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3answers
12k 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?
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2answers
175 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 ...
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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 ...
2
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0answers
4k 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 ...
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2answers
323 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 ...
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2answers
64 views

How to unlock a G1

Yes, I got the G1 the day it was launched in the UK. Swapped it for HTC Desire when that was launched. Now have a Galaxy S4. Anyway, I moved away from T-Mobile without removing the G1's network lock ...
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0answers
1k views

zte turkcell maxiplus 5 sim lock after flashing custom rom

I have a ZTE phone, that I installed a CWM recovery. After that I tried to install a custom rom.... After many problems I managed to flash the official rom from ZTE site by using their online update ...
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1answer
1k 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 ...
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0answers
16 views

Will my phone will get locked after upgrading to Jelly Bean? [duplicate]

My phone is Docomo Samsung Galaxy S2. The default network is Docomo but I unlocked it by giving it to a shop I want to upgrade it to Jelly Bean will it be lock again? How can I upgrade it ?
2
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4answers
139 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 ...
4
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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 ...
4
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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 ...
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0answers
32 views

Help samsung home pin

I have a Samsung Galaxy S3 mini. Sometimes when I go to enter my PIN, if I touch anywhere on the screen i.e. on my screen saver, any of the numbers, or go, it just inputs "0" in the entry box. How can ...
4
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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 ...
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1answer
2k views

Verizon HTC Incredible 2 [duplicate]

Will rooting my HTC Incredible 2 allow me to switch carriers ? If not does anyone have any information on how to unlock my phone from Verizon ??
3
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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. ...
1
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1answer
154 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 ...
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 ...
1
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1answer
2k views

Will flashing re-lock my unlocked phone [duplicate]

I bought an unlocked android phone at Amazon and it works perfectly. This phone in particular doesn't have any OS updates I could do (Motorola Defy), so basically I am stock with Froyo unless I flash ...
0
votes
2answers
297 views

Unlocking an Xperia X10

I have bought a used Xperia X10 for development. It is locked to a network provider, and I need to unlock it. It does not show an option for a passcode or unlock code. Is there any other way to ...
2
votes
1answer
281 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 ...
3
votes
2answers
749 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 ...
1
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1answer
1k 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 ...
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1answer
951 views

Can I lock android phone to one network if it is unlocked?

Can I lock android phone to one network? If can be unlocked if I have both lock and unlock code? I want to lock my android phone to use only one network.
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2answers
4k 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 ...
3
votes
1answer
890 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 ...
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. ...