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SPV M600 Sim Unlock problem

Hi Guys and Gals, I am moving back from M5000 to M600 but I am having a bit of difficulty unlocking the Sim. I have followed the Wiki directions and have my unlock code. The problem is that when I insert my new sim I am not asked for a network password but simply informed that I have an invalid or missing sim card, therefore I cannot unlock.
Any bright suggestions out there?

yep
i had the same problem
try to put a small piece of paper between your simcard and your battery,
for me it's working

Try a different SIM if you have one.

Hi guys, i have a similar problem, i run lokiwiz 03a and get the unlock code, then try a different sim, on boot up it first asks for network unlock code, i enter it, then it asks for service provider code, i then enter the same code, it then proceeds to the today screen, searches for network, then the phone goes into flight mode (well the phone function shows off) then the sim lock pops up again and asks again for the two unlock codes??? i have tried with various sim networks, hard reset and manually copied the .cabs to ROOT of phone, with no luck. help..... each time i try Lokiwiz it gives same code...

BT S710

I have a BT branded S710 and have purchased an unlock code for it, this is a new unused phone straight out of the box but when I put in an unsupported SIM I don't get the prompt to enter the unlock code just a message about being only able to make emergency calls. How do I persude it to let me enter the unlock code?

same issue..any solution??

plusmore said:
I have a BT branded S710 and have purchased an unlock code for it, this is a new unused phone straight out of the box but when I put in an unsupported SIM I don't get the prompt to enter the unlock code just a message about being only able to make emergency calls. How do I persude it to let me enter the unlock code?
Click to expand...
Click to collapse
I have been unbelievably stupid, I had put the SIM card in the phone the wrong way round! All is now sorted - sorry folks.

http://www.imei-check.co.uk/
unlocked it here

How to input unlock code for G2x

(mod, please put it sticky for reference)
First of all, you have to obtain unlocked code. You can obtain from T-Mobile if you passed 3 months after you requested last unlocked code, and the phone passed 14 days (30 days in CA) trial. It is recommended to request it through online chat to ensure it's 100% correct (you can obtain your IMEI by key in *#06# from dial. Make sure you triple-check it).
After you obtained your unlocked code, go to dialer (you don't have to have foreign SIM but it is recommended to test) and input
2945#*999#
(this method works with ANY LG GSM Android phone because #*xxx# is actually your phone model. For example, Optimus T is P509 then #*509# and G2x is P999 so #*999#)
Enter unlock code correctly. Once you verified everything is correct, you can press the button below, and the phone will reboot, then the phone is unlocked.
-----edit-----
Notice: you must with stock ROM in order to make it work. If you flashed it with custom ROM, use your Clockworkmod to backup your current ROM and install stock ROM (2.2 in order to root it).
After you successfully unlocked it, you can go to CWM and restore it back.

mingkee said:
(mod, please put it sticky for reference)
First of all, you have to obtain unlocked code. You can obtain from T-Mobile if you passed 3 months after you requested last unlocked code, and the phone passed 14 days (30 days in CA) trial. It is recommended to request it through online chat to ensure it's 100% correct (you can obtain your IMEI by key in *#06# from dial. Make sure you triple-check it).
After you obtained your unlocked code, go to dialer (you don't have to have foreign SIM but it is recommended to test) and input
2945#*999#
(this method works with ANY LG GSM Android phone because #*xxx# is actually your phone model. For example, Optimus T is P509 then #*509# and G2x is P999 so #*999#)
Enter unlock code correctly. Once you verified everything is correct, you can press the button below, and the phone will reboot, then the phone is unlocked.
Click to expand...
Click to collapse
when i got my unlock code from tmobile i do it like i do any other phone.
power off
insert sim
power on
screen pops up insert code
put in code
unlocked

did tmobile ask you to fax them a receipt of your purchase of phone since u requested a unlock code or are you under contract.

charlieb620 said:
did tmobile ask you to fax them a receipt of your purchase of phone since u requested a unlock code or are you under contract.
Click to expand...
Click to collapse
Nope.
All I have to do is to provide IMEI.

mingkee said:
Nope.
All I have to do is to provide IMEI.
Click to expand...
Click to collapse
i did that and than inside my email they ask for verification of purchase.

charlieb620 said:
i did that and than inside my email they ask for verification of purchase.
Click to expand...
Click to collapse
Did you purchase from corp store or from my t-mobile?
I wasn't asked for proof of purchase.

purchased from a tmobile store outright.

charlieb620 said:
purchased from a tmobile store outright.
Click to expand...
Click to collapse
This is strange because I was not asked for receipt for the phones purchased from corp store or my t-mobile. It may be possible you didn't purchase under your phone number.

If you are in good standing, thet wouldn't ask you for anything. I bought my g2x off CL, and I got my unlock code through email with no problem whatsoever, got my code 8 hours after i've requested it.

sweet added to the sticky (rollup and forum).
Thanks,

Here is the instruction from T-Mobile. I asked for the unlock code through their web chatting and they send me the unlock code 8 hours later.
T-Mobile Sim Unlock Request
Sim Unlock Reference: xxxxxx
IMEI: XXXXXXXXXXXX
Unlock Code: XXXXXXXX
Thank you for taking the time to contact T-Mobile. Below you will see the Instructions for unlocking your Samsung device. Please be advised a non T-Mobile SIM card MUST be used to unlock this device.
- Insert a NON T-Mobile SIM & turn Device on
- The Device will automatically prompt you to enter code into an empty field.
- Tap in the empty field above the "Unlock & Dismiss" options (this will display a key pad on the screen).
- Using the key pad input the Unlock Code provided by T-Mobile.
- Press the Back button to remove the keyboard from screen.
- Tap the "Unlock" option; handset should display "Network Unlock Successful".
Thank You,
Sim Unlock Department
T-Mobile USA, Inc.

rukawa2k said:
Here is the instruction from T-Mobile. I asked for the unlock code through their web chatting and they send me the unlock code 8 hours later.
T-Mobile Sim Unlock Request
Sim Unlock Reference: xxxxxx
IMEI: XXXXXXXXXXXX
Unlock Code: XXXXXXXX
Thank you for taking the time to contact T-Mobile. Below you will see the Instructions for unlocking your Samsung device. Please be advised a non T-Mobile SIM card MUST be used to unlock this device.
- Insert a NON T-Mobile SIM & turn Device on
- The Device will automatically prompt you to enter code into an empty field.
- Tap in the empty field above the "Unlock & Dismiss" options (this will display a key pad on the screen).
- Using the key pad input the Unlock Code provided by T-Mobile.
- Press the Back button to remove the keyboard from screen.
- Tap the "Unlock" option; handset should display "Network Unlock Successful".
Thank You,
Sim Unlock Department
T-Mobile USA, Inc.
Click to expand...
Click to collapse
It didn't work on my Optimus T. I exactly followed the instruction but there's NO prompt when I put in old Wataniya (from Kuwait) SIM, so I did a search and found the working instruction.
It was used for Optimus P540, but I found it also works with Optimus T (change to 509) and G2x (change to 999) and I got an unlock prompt even with T-Mobile SIM.

Got my unlocked code from tmobile within 12hrs for my G2x that I purchased from ebay. All the lady ask for was the IMEI number.

do u noe the unlock code for phonetestmode or hiddenmenu?

Just wanted to say the OP was correct. I used the 2945#*999# to unlock my G2X and it worked perfectly. Only thing I should have known is that it won't work if you are on Wifi Calling. It needs a GSM signal to request the unlock.
P.S. I got the unlock code from unlockthatphone.com for $15. Took 12 hours to get it.

Wanted to say thanks for this thread. I chatted with a T-Mobile representative yesterday via the website and the request got sent in around 12:30 Eastern. Twenty-three hours later I had the code waiting in my inbox.
I decided to try an old, deactivated AT&T SIM I had in an old phone and it worked just fine to enter the unlock code. I would have used the Dialer method mentioned in the OP if that didn't work though, as I was able to get the unlock text box by entering the Dialer code as a test yesterday.
Thanks for the information, everyone!

I found this guide to be very helpful. I thank you as I am still waiting for my phone to arrive.

So unlocking does what? You can use it on ATT with what internet speeds? You can also use it in other countries to right? Whats the data speeds though?

ashton4life said:
So unlocking does what? You can use it on ATT with what internet speeds? You can also use it in other countries to right? Whats the data speeds though?
Click to expand...
Click to collapse
You can use SIM from other carrier.

mingkee said:
(mod, please put it sticky for reference)
First of all, you have to obtain unlocked code. You can obtain from T-Mobile if you passed 3 months after you requested last unlocked code, and the phone passed 14 days (30 days in CA) trial. It is recommended to request it through online chat to ensure it's 100% correct (you can obtain your IMEI by key in *#06# from dial. Make sure you triple-check it).
After you obtained your unlocked code, go to dialer (you don't have to have foreign SIM but it is recommended to test) and input
2945#*999#
(this method works with ANY LG GSM Android phone because #*xxx# is actually your phone model. For example, Optimus T is P509 then #*509# and G2x is P999 so #*999#)
Enter unlock code correctly. Once you verified everything is correct, you can press the button below, and the phone will reboot, then the phone is unlocked.
Click to expand...
Click to collapse
I got my unlock code from t-mobile. I put in an ATT SIM & nothing appeared - so I tried this method. What happens to me is my phone says "USSD code running..." and then it just sits there - never pops up anything for me to enter the unlock code.
I'm running CM7, so I'm wondering if I actually have to flash my phone back to stock just to unlock the damn thing - sure hope not..hahaha
Any suggestions anyone?
Thanks!

Phone wont SIM unlock

I've used the method described in the Sim Unlock thread to generate my code, but I can't get the unlock code request (dialogue box) to come up on the phone. I've turned it off and inserted a different SIM (it was originally O2, now it's GiffGaff, although I believe they use the O2 network) but I don't get the prompt to enter my unlock code. I can scan for networks and register on the O2 network, but I get No Service errors.
Tried a variety of ROMS. I got asked for the code on a Cyanogen one but it always refused it and asked for it at every boot. I've also SuperCID'd to 11111111.
Any clues?

Just reset phone to 1.78 stock and on first boot spotted a message "Restricted Access Changed". Does this mean anything?

So it would appear that putting a GiffGaff sim into an O2 locked phone won't trigger the unlock request. But putting a T-Mobile one in does. It's accepted the code, but I'm still getting 0 bars of reception.
Does anyone has any ideas?

Galaxy S8+ not prompting for unlock code

I have one galaxy s8 which was claimed to be unlocked b4 buying it,put in my sim and it's writing "invalid sim card,sim card not supported"if i go to settings and search for available networks,it will bring different networks but wont allow me to register on it.if i try to call...it will say "not registered on network"
I made an enquiry and they said if it is locked,it should prompt for an unlock code immediately i put my sim inside.even if i wana unlock again,d phone is not asking for any unlock code neither is it asking for unfreeze code.i also tried secret codes with it and it is not working #7465625*638#.it is a branded at&t phone

You may need to configure the APN for the new carrier manually. Go to settings, connections, mobile network, then APN (Access Point Names), select add and type in new APN settings.
However if that doesn't work, It may be hard locked. Meaning that an invalid sim unlock code was entered too many times. In my past experiences if it doesn't prompt you for the code when you enter a new sim card it is either hard locked or already unlocked and needs the APN settings configured. However after inserting a new sim card the phone would normally configure the APN automatically and only on occasion would I need to modify it to get data/text working properly.
Sent from my SM-G955U using Tapatalk

invalid sim card,sim card not supported means it is locked device, i would like to help you to unlock it if you're interested

I'm facing this same issue. When I got the phone I installed an unbranded firmware (XAA/XAA/ATT) and I've since upgrade to Oreo. I can't seem to restore an ATT firmware so I can be prompted to enter the unlock code. Any suggestions?

make sure you using non at&t sim and it must be an active sim card. submit an unlock request to at&t on their website or use an unlock service like attunlocker.us to get your code.

andykit said:
make sure you using non at&t sim and it must be an active sim card. submit an unlock request to at&t on their website or use an unlock service like attunlocker.us to get your code.
Click to expand...
Click to collapse
The issue is there's no prompt to enter the unlock code.

is the SIM card active that you are using? what SIM is it?
markgm said:
The issue is there's no prompt to enter the unlock code.
Click to expand...
Click to collapse

andykit said:
is the SIM card active that you are using? what SIM is it?
Click to expand...
Click to collapse
Yes, it's a T-mobile SIM.

Sorry to necro, but does no one have a solution for this? I've seen plenty of threads such as this but very few solutions.

Necro double-post, I'm really asking for it...
First, you have to get an unlock code from the carrier. I had AT&T and it told me my phone was active under an account (previous owner). When you call AT&T and ask for an ulock they loop you to the website and you can't progress there, so you just have to ask for "customer service" twice and then get to the second level support. They can get you an 8 digit code for unlock. But I still never got prompted for the code and neither AT&T (5 calls), Cricket (3 calls), or xFinity (3 calls) could tell me how to get to the unlock screen. The following did it.
My solution was to use the following method, as found on https://www.tenorshare.com/samsung/samsung-unlock-code.html:
Step 1: Open the phone and type #7465625*638*# in the dialer.
Step 2: Then, it will ask for the Samsung Reset Code, it is an 8-digit code.
Step 3: Provide it and you will be done.