If you need to unlock a LG K121 K4 from home, you should call the network provider who has sold you the device, it is the unique possibility if you want to have your phone unlocked for free. The carrier will provide you with the unlocking code if you are the cell phone plan owner. When you have not obtained the unlock code because you do not fulfill the carrier requirements, you can prompt the unlocking on our website.
The easiest way to unlock a K121 K4 is to get the official unlock code thanks to our LG servers, when other SIM cards are inserted, and your LG K121 K4 asks you for the code; you must fill out the questionnaire and in a few hours you will receive an email with the unlock instructions.
Please be informed that sometimes the unfreeze MCK code is also needed (when you try to dial the network PIN, LG will ask you the - SIM network PIN blocked. Enter SIM network PUK - ) and sometimes it requires the regional code RGCK (just at the moment when you try to use it in another continent). Don't worry, we always provide all the codes.
No, once a LG is unlocked, it will be never relocked again, so you can update the firmware without any trouble.
Unlocking method is for any SIM card of Optus, Vodafone from Australia and any other country.
When a K121 K4 does not reject your new SIM card but does not allow you to make calls, it is most likely that the IMEI has been blacklisted. You need to contact with the carrier to solve it.
For most new AT&T, Cricket, metroPCS and T-Mobile models in the United States, the unlock method is different, it does not prompt the SIM network unlock PIN and uses the Device Unlock application, the app is usually already installed at the factory. You only have to order the unlocking and when server authorize us to unlock it, we will send you an email, just connect the device to WiFi and press Permanent Unlock within the application.
The most common is that the LG from Sprint, Verizon, Tracfone, Boost Mobile, StraightTalk or Simple Mobile from USA do not prompt the network unlock PIN, because these phones have a blocked firmware with the carrier. Our company solves this block and removes this restriction, but it has to be unlocked with a program on the PC and our technician will help you remotely.
1. - Turn the terminal on with or without a SIM Card
2. - Dial the code 2945#*(model number)#
For example: If your model is D802, dial 2945#*802#
For example: If your model is E610, dial 2945#*610#
3. - A hidden menu will appear. Select Network lock
4. - Enter the code and press OK
4b. - If your phone indicates "not personalised", enter this other code secondary code in the Service Provider category and press Unlock.
Device Unlock app method:
1. - Make sure you have an active data connection via mobile data or Wi-Fi.
2.- From the Application list, tap Device Unlock, the application is pre installed in your device.
3.- Choose the Permanent Unlock or Unlock Device option
4.- Restart the device.
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