Go phone SIM in unlocked phone?

viewfly, I am not sure why that happened. I established my PrePay account a week before I bought my phone, which at that time was the SE z520i, unlocked and unbranded. Since then I use the SIM in the Cingular branded V557, which was later unlocked with the code from Cingular.

I just put the GO SIM in my 6131 and it booted up fine, I called my LG, my GoPhone no. showed up there and my Nokia said "your last transaction cost you 25c." So from my experience a GO SIM can be used in any unlocked GSM phone.

It would be interesting to find out if your friend's GO SIM is different than mine. Mine looks just like a regular 64K smart chip and word "GO" does not appear anywhere on it.

PS: You are free donate the 25c I used up to see if I could duplicate your situation, to a good cause....

 

I also agree, I was on Cingulars Pay as you go thing for a while, the irony is I bought a Cingular Razr V3 (black) when I got my prepay sim, and later used the SIM in both my w600i and my 8125 just to see.

 

well from the way it sounds.......its asking for a security PIN that was put into the SIM not a PUK code or a subsidy code......it should work fine but when you received the GoPhone the phone was set not to ask you fro the PIN and the PIN was programmed into the phone so that it wouldnt ask you.....

maybe im wrong but i dont think its a phone problem.....this is definitely a SIM security issue

 

yeah the code that your describing sounds like something that has to be set by the customer or if it is set when you received it there must be a factory default

 

If the PIN wasn't changed/set by a user, Cingular's default PIN numbers are as follows:

PIN1 - 1111

PIN2 - 2222

 

believe it or not sometimes the PIN can be the last 4 of your SSN or the last 4 of your phone number......ive known this to happen before

 

My pin was the last 4 of my SSN when Cingy swapped my sim and phone # last week. Also be careful with how many times you enter the invalid pin, if you do it too much you will have the sim lock in which case you'll need the Pin Unlock Key Code (PUK Code)

 

yeah but if you type it incorrectly enough times and seal the SIM with PUK.....all you need to do is call Cingular and they will give it to you

 

Very true, it was hard for me the one time it happened, since my Cingular phone is the only phone I have. As a side note if you enter the PUK code too many times the sim completely locks and you will need to purchase a replacement ~$18.

 

really......never heard that before.....interesting.....although i dont think most people get that far because the standard customer would have called Cingular at this point

 

I got on with Cingular in their customer support chat, that's how I retrieved my PUK the last time this happened to me. That's also how I found out about the PUK SIM Lock, they advised me not to enter the wrong code too many times.

 

haha yeah....then you got pissed off and have to spend $20 to buy a new SIM......:biggrin:

 

naw they gave me the wrong code the first time, got it the second time, but yeah I would have gotten tick'd considering it was a new 3G sim that locked up on me.

 

thats prolly why i never lock my phone anymore.:loony:

 

Oh, I don't know. You'd be amazed at how many people show up at the Cingular Corp Forums with fried SIMs who either tried to guess the PUK or thought it still wanted their PIN code.
When I was posting there regularly I told on average about 2 people a day that they had to buy a new SIM.

Many, many times more than that show up with PUK locked phones, so they get told to call Care to get the unlock code.

 

haha....wow

 

They still post these at a rate of 2-3 a day over there. It is amazing how many people play with these codes & don't have a clue as to what they are doing.

 

Have you ressolved this? If not, I believe it's asking for the security code for the phone. I have security turned on on my Nokia 3120 so that when it encounters a new sim it asks for the security code. So, you probably or the folks that sold you the phone setup the phone to ask for the security code when a new sim is put in the phone. If it were the sim pin, it will ask for the code regardless of what phone the sim is inserted into. Of course, you can diasble/enable the phone lock code and the sim lock code from the phone, as long as you know the current code.

 

That would be a very helpful assumption, and sadly none of us thought about it, but instead we all came to the conclusion it had to do with the SIM. Viewfly I suggest you check that out.

 

wait so your saying that its not a carrier programmed code......cuz if you put a T-Mobile SIM into a Cingular phone and vice versa......it asks for a subsidy code......but your saying that a code can be activated by the customer to prevent other SIMs from being put into the phone when it is unlocked???

 

Most phones have a security code. On some phonbes you can set it up to ask for the code when the phone is turned on or when a new sim is placed in the phone. For example on my Moto V551 and all the CDMA phones I have used it asks when the phone is turned on, while in the case of my Nokia 3120 it only asks the first time it encounters a new sim. There is also the subsidy lock on GSM phones which only allows it to accept the sim of the phones carrier until it's unlocked. i.e A locked tmobile phone will only accept a tmobile sim. There is also the sim lock code in which case the sim always asks for an unlock phone regardless of which phone it's put into. This one actually prevents the sim (not the phone as in the case of the phone security code or the phone subsidy lock code) from being used by someone else.

 

alright.......wow..........thats a lot of security.for a device that started out strictly as communication......just think that we wouldnt need all of these codes if the phones were still only used for communication and not for phonebooks and email and messaging etc.

 

Hey, just think of it, someone else could have this issue and could find the answer here, there's no stupid question, just stupid answers

 

No problem...good to know you got it resolved.