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I think there is a big misunderstanding what locked/unlocked means.

All phones that are made are always assigned to a carrier (yes even the ones that say "Factory GSM Unlocked") to prove that just look up the model of the phone and you will see what carrier it was assigned to.

In order for a phone to have service the company has to know that you want service on this phone.

In the past company's like Sprint and Verizon did not work with a sim card they worked with the id of the phone to recognize what kind of phone / what carrier it was assigned to. This is know as CDMA. Yet company's like att/t-mobile did that too but the service was applied by using a sim.

Once LTE came out for what ever reason all company switched to the "Sim technology". There is still one thing that did not change, each carrier has their assigned bands that they have from the FCC that they are allowed to use.

Being that there are standard bands that every one uses (for international or the like) these are included in every phone. So.... All verizon phones will work on att, BUT will only have the bands for slower internet since those are standard bands.

Now verizon's LTE band is NOT a standard nor is their CDMA a standard so an att or a t-mobile phone will NOT be able to accept a Verizon sim.

Now lets go to sprint phones,

All other company's when they had the phones made for them all they do is have it customized for its own use (Read: their own LTE bands). Sprint on the other hand not only did they have them customize it they put a lock in the software blocking all local USA bands (Verizon ATT and Tmobile).

They even go a step farther and they still do the old way of checking the device ID to see if its a sprint phone or not.

Hope this explains a few things feel free to ask any questions.

Att has an easy way to ask for an unlock https://att.com/deviceunlock

How to check a Sprint iPhone (only): You cannot check it with an american sim you must put in a foreign sim. You DO NOT have to backup and restore as sprint sends in the email! Connect to wifi before starting this procedure.

When you put the sim in one of 3 things will happen.
1. It will say no service in the top right corner = Unlocked
2. It will do a soft restart and ask you for your apple id password = Almost unlocked, after putting in the password its unlocked
3. It will do a soft restart and say "Sim not valid" = Phone is locked

If you got number 2. and you dont know the password just put in your old sim and all will return. When you find out the password repeat the steps.

Willmyphonework.net Can check if the phone will work
« Last edited by yakov116 on June 29, 2016, 01:34:42 PM »

Author Topic: cell phone unlocking  (Read 85333 times)

Offline Danlover111

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Re: cell phone unlocking
« Reply #645 on: July 28, 2020, 10:26:07 PM »
I got a Verizon(KAZUNA) flip phone from target,i put in a sim card from usmobile.com, its saying sim card is not from Verizon, its giving me an option to enter numbers to unlock it..., any help would greatly be appreciated.
 

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Re: cell phone unlocking
« Reply #646 on: July 28, 2020, 10:32:39 PM »
I got a Verizon(KAZUNA) flip phone from target,i put in a sim card from usmobile.com, its saying sim card is not from Verizon, its giving me an option to enter numbers to unlock it..., any help would greatly be appreciated.
 
If you activate the phone on Verizon prepaid for 1 month ($30), they will unlock it. They say you need to wait till after the month, but I've had them do it right after the activation

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Re: cell phone unlocking
« Reply #647 on: July 28, 2020, 10:40:34 PM »
If you activate the phone on Verizon prepaid for 1 month ($30), they will unlock it. They say you need to wait till after the month, but I've had them do it right after the activation
thanks, what number did you call?

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Re: cell phone unlocking
« Reply #648 on: July 29, 2020, 09:15:47 AM »
How can I get an Alcatel Smartflip 4052C from Cricket unlocked (to be able to use on T-Mobile)?
How much should I expect to pay?
Thanks.
@ae123
 So any luck unlocking it?
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Re: cell phone unlocking
« Reply #649 on: July 29, 2020, 03:17:47 PM »

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Re: cell phone unlocking
« Reply #650 on: August 02, 2020, 03:17:34 PM »
Anyone know any info about a RSIM and if it works on iPhones?

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Re: cell phone unlocking
« Reply #651 on: August 02, 2020, 03:23:00 PM »
Anyone know any info about a RSIM and if it works on iPhones?
Never heard of that method to unlock an iPhone. Interesting thing this RSIM.
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Re: cell phone unlocking
« Reply #653 on: August 03, 2020, 02:01:17 AM »
The guys that unlock via TeamViewer, what do they do to the phone? They only change the IMEI?
 (I have a model that I can't find anyone selling a code for)

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Re: cell phone unlocking
« Reply #654 on: August 03, 2020, 02:04:35 AM »
The guys that unlock via TeamViewer, what do they do to the phone? They only change the IMEI?
 (I have a model that I can't find anyone selling a code for)
Not quite sure, waiting for them to respond to me and will try and see what happens.
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Re: cell phone unlocking
« Reply #656 on: August 05, 2020, 09:27:59 PM »
Never heard of that method to unlock an iPhone. Interesting thing this RSIM.
Rsim and the like have been around a long time...many many years

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Re: cell phone unlocking
« Reply #657 on: August 05, 2020, 09:40:47 PM »
Rsim and the like have been around a long time...many many years
I guess the real answer is because I never owned an iPhone.
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Re: cell phone unlocking
« Reply #658 on: August 27, 2020, 02:36:57 PM »
Not quite sure, waiting for them to respond to me and will try and see what happens.
Any updates?

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Re: cell phone unlocking
« Reply #659 on: August 27, 2020, 04:08:19 PM »
Any updates?
Will do it tonight or tomorrow beh.
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