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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2answers
147 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 ...
0
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2answers
442 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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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 ...
1
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1answer
101 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 ...
0
votes
1answer
79 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 ...
0
votes
1answer
680 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 ...
0
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1answer
3k 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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1answer
123 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 ...
0
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1answer
866 views

Mobile network settings - Not enabled for modifications (Greyed)

I bought a zte v7275 tablet Device information model number - ZTE V7275 android version - 4.0.4 kernel version- 3.0.21-perf-gc8726c4f Flash ROM which is likely to be locked to a single ...
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 ...
0
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1answer
604 views

how to solve Network not found problem in Samsung Galaxy s2?

I have UK based Samsung Galaxy s2 gt-i9100 and i was using since last 2 years without any problem in india but suddenly i found it says network problem so how to solve this ? model number - Gt-I9100 ...
2
votes
0answers
356 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
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 ...
1
vote
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 ...
1
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0answers
2k views

How to unlock Samsung Galaxy S3 SCH-R530?

Can anyone tell me if the Samsung Galaxy S3 LTE model SCH-R530 can use any other non-contract carriers besides U.S. Cellular? I have searched, and I am getting frustrated with trying to find a way to ...
1
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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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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 ...
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0answers
44 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
50 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 ...
0
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0answers
27 views

Not receiving network signals on samsung S3 T999?

Hi I just bought a Samsung S3 T-999. The problem is when I switch cellphone on, it connects to my network but just for a second. The moment that second's gone, I lose signals completely. So it's not ...
0
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0answers
24 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
65 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
18 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. ...
0
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0answers
63 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 ...
0
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0answers
288 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 ...
0
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0answers
181 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 ...
0
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0answers
25 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 ...
0
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0answers
70 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
votes
0answers
240 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) ...
0
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0answers
142 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
70 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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0answers
89 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 ...
0
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0answers
339 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 ...
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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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 ...
0
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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?
0
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0answers
342 views

how to unlock a Huawei inspira 867g from net10 network

i'm from Trinidad and Tobago and i bought the phone (huawei inspira 867g over the net) not knowing that net10 was a service provider and they dont unlock their phones for other network because they ...
0
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0answers
465 views

HTC Desire 300 Network unlock + radio unknown+cid file fail+mccmnc file fail, ecc Help please

I've got HTC Desire 300 locked on Orange Moldova. I'm trying to unlock it, but so far no positive result. I've unlocked the bootloader through HTC dev, so now it's unlocked s-of, and I've got root ...
0
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0answers
18k views

Network SIM unlock code not working

I paid to get an unlock code for my Samsung Galaxy S4 Active SGH-I537 locked to AT&T. I have tried to enter the unlock code given when the phone boots with my other carrier SIM card inserted, but ...
0
votes
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 ...
0
votes
0answers
107 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 ...
0
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0answers
129 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?