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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 66625 times)

Offline elikay

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Re: cell phone unlocking
« Reply #150 on: February 25, 2014, 08:12:55 PM »
Is it possible to get a Boost or Virgin Mobile phone to work on Verizon?
How about to work on Sprint?
Pageplus should be the easiest, though if the port is locked you won't be able to flash it anywhere.

Offline DovtheBear

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Re: cell phone unlocking
« Reply #151 on: February 25, 2014, 08:14:31 PM »
definitely possible. U need a flashing specialist
That's why I'm here. :)
Pageplus should be the easiest, though if the port is locked you won't be able to flash it anywhere.
Google translate no worky.
I'm looking to Sprint and/or Verizon.
"להסתובב זה לא אומר להיות חופשי"

Offline macher

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Re: cell phone unlocking
« Reply #152 on: March 10, 2014, 05:30:42 PM »
Looking to unlock a iphone 5.

Locked with t-mobile due to failure to pay bill ( Bought on craigslist )


Let me know if you can do it, or what are my options

Offline Jay the PRESIDENT

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Re: cell phone unlocking
« Reply #153 on: April 02, 2014, 10:35:51 PM »
Has anyone recently used a friends AT&T account to unlock AT&T iphone (purchased on ebay etc.)?
it looks like officially the AT&T account has to be associated with the iphone.

Offline Jay the PRESIDENT

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Re: cell phone unlocking
« Reply #154 on: May 18, 2014, 05:48:18 PM »
Does a  "factory unlocked iphone" necessarily mean it will work with all GSM carriers (and LTE)? or are there 2 factory unlocked versions: one for CDMA and one for GSM?

Offline DanH

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Re: cell phone unlocking
« Reply #155 on: May 18, 2014, 05:54:13 PM »
Does a  "factory unlocked iphone" necessarily mean it will work with all GSM carriers (and LTE)? or are there 2 factory unlocked versions: one for CDMA and one for GSM?
I've never heard of a factory-unlocked CDMA phone.  At best, the CDMA company will unlock it, but not Apple.
For tech help feel free to Telegram me @DanTechSupp

Offline Jay the PRESIDENT

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Re: cell phone unlocking
« Reply #156 on: May 18, 2014, 05:55:31 PM »
I've never heard of a factory-unlocked CDMA phone.  At best, the CDMA company will unlock it, but not Apple.
Thanks!

Offline DanH

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Re: cell phone unlocking
« Reply #157 on: May 18, 2014, 06:10:13 PM »
I've never heard of a factory-unlocked CDMA phone.  At best, the CDMA company will unlock it, but not Apple.
Confirmed:
https://discussions.apple.com/thread/4575189?tstart=0
For tech help feel free to Telegram me @DanTechSupp

Offline Jay the PRESIDENT

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Re: cell phone unlocking
« Reply #158 on: May 18, 2014, 06:28:54 PM »
Confirmed:
https://discussions.apple.com/thread/4575189?tstart=0
Thanks again...
Would a verizon iphone 5 would work with a US GSM carrier (tmobile) ?


Offline AbrahamS.NY

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Re: cell phone unlocking
« Reply #159 on: May 18, 2014, 06:45:26 PM »
Anyone with a AT&T account so that I can request to unlock my iPhone?

Offline Jay the PRESIDENT

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Re: cell phone unlocking
« Reply #160 on: May 18, 2014, 07:07:35 PM »
Anyone with a AT&T account so that I can request to unlock my iPhone?
does that still work? or will ATT check if the phone was associated with that number?

Online cozmohoot

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Re: cell phone unlocking
« Reply #161 on: May 18, 2014, 07:48:30 PM »
Thanks again...
Would a verizon iphone 5 would work with a US GSM carrier (tmobile) ?
yes.

Offline Jay the PRESIDENT

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Re: cell phone unlocking
« Reply #162 on: May 18, 2014, 08:16:47 PM »

Offline AnonymousUser

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Re: cell phone unlocking
« Reply #163 on: May 18, 2014, 08:20:07 PM »

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Re: cell phone unlocking
« Reply #164 on: May 18, 2014, 08:46:40 PM »
thanks   how bout LTE?
On ATT iPhone 5 will work on 4G (HSPA+)