Question about Samsung SYNC SGH-A707 Cellular Phone

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Sim Card Will my old sim card from another cell phone work in the Samsung Sync A707? The sim card dates back to the time before AT&T became Cingular. I originally had a 2 year contract with ATT so I have been using that contract month to month now for years. How many years was Cingular in business? And now back to ATT. Thanks. Herb

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Re: Sim Card

To use a SIM Card with a different phone service than it was originally programed for, you will have to unlock the phone. Phones come locked to a specific service provider and/or country. In theory, you can contract your phone provider and request an unlock code. In practice, many providers refuse to give these codes out.

There are also services online that will provide these codes, or let you ship your phone to them to be unlocked, for a fee. One such site is: - but there are many more. Do a google search for "unlock cell phone" and you'll find quite a few links... find the one that has the best price for your phone model.

Of course, there's a chance the card will work as-is if you're still using the same phone provider. But with all the changes AT&T has gone through, I wouldn't count on it.


Posted on Nov 13, 2007

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How do I unfreeze my att samsung eternity without a computer cord

Computer card Unlocking is very Big process,So that You can use the Unlock code....also in computer card Unlocking you need to use Cable,Software,USB port,Boxes etc,so take big time ,it's risk process,cost High also,So that i would suggest the Unlock code the simple method to Unlock Your Samsung SGH-A707 SYNC phone,You need to Unfreeze means specify the Network ,Country it locked now?
You can get the Unfreeze Code at
Simpleunlocking and Unfreeze the Phone from Lock...

Samsung SGH-A707 SYNC Unlocking InstructionsWarning : Do not enter any wrong unlock codes on your Samsung SGH-A707 SYNC mobile phones. If you enter over a certain amount of wrong unlock codes on your Samsung SGH-A707 SYNC mobile phone, your phone may get hard locked and sometimes become unusable.
1 - Switch ON your Samsung SGH-A707 SYNC with a NOT ACCEPTED SIM Card.
2 - Compose : #7465625*638*CODE# (or *#7465625*638*CODE#).

NOT ACCEPTED: We mean, to use a sim card from a network other than the network your Samsung SGH-A707 SYNC is locked to.
CODE: Its the unique Unlock Code for your Samsung SGH-A707 SYNC.
Each Samsung SGH-A707 SYNC mobile phone has an unique unlock code. You can buy the unique unlock code for your Samsung SGH-A707 SYNC mobile phone using the form above.

Jul 18, 2011 | Samsung SYNC SGH-A707 Cellular Phone

2 Answers

When i open samsung SGH-A707 cingular mobile it says "phone freeze SIM unavailable please contact service provider."

Nobody gives you free,Unlock codes are generated based on your imei. Depending on the carrier it's locked,
you can get unlock codes at reliable cost here
check, if your model is available in the list

Dec 27, 2010 | Samsung SGH-A707 Cellular Phone

1 Answer

I have a Samsung 707 Sync and when I try to view my text messages all I get is a blank white screen.

I had the same exact issue.  Also, I couldn't send, receive or view old messages.
What I had to do was power it up without the SIM card.  You should get a message that there is no SIM card - that's ok.  Then power it down, re-install the SIM card and power back up.  My problem went away.

Dec 06, 2008 | Samsung SYNC SGH-A707 Cellular Phone

1 Answer

SGH A 707 SIM card problem

At this stage, call AT&T is probably the best bet. Call back until you get a more knowledgable technical support rep.

Jul 03, 2008 | Samsung SYNC SGH-A707 Cellular Phone

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Samsung SIM card issues!

you dont have to buy new sim...go to your nearest service senter. hardware failure.... sim sockets or sim ic... thats the problem...

Apr 08, 2008 | Samsung SYNC SGH-A707 Cellular Phone

1 Answer

Phone freeze sim unavailable contact service provider

I had a similar problem a few months ago. A friend of mine suggested that I turn off my phone, take the battery out and then the sim card out (the little card that says either CINGULAR or AT&T) on the back. Blow some air to try and get the dust out and put everything back on, then turn on the phone again.

It worked!!

I don't know if this will work for you, but I hope it does!! Good luck!!


Mar 17, 2008 | Samsung SYNC SGH-A707 Cellular Phone

2 Answers

Sim card transfer

depends on the phone you are using to transfer from. On my sony, for example, i can go to my contact list options and send contacts via bluetooth to another device.

Which phone are you sending from?

Jan 22, 2008 | Samsung SYNC SGH-A707 Cellular Phone

1 Answer

Samsung SGH a-707 has password that I don't know. I do I get past this?

Having a similar problem...i went into the store and they tried replacing my sim card but since my kid put the password and then forgot it, the sim card solution did not help. You might try going into a cingular store and let them try to unlock it. Seems there are a few tricks to be tried, but i am calling samsung for help.

Jan 02, 2008 | Samsung SYNC SGH-A707 Cellular Phone

3 Answers

Unlock sgh a707

i need the netowrk code to unlock a smsung a707

Dec 28, 2007 | Samsung SYNC SGH-A707 Cellular Phone

3 Answers

Unlock Samsung SGH A 707.

Try these guys.

I gave them my IMEI number and they sent me a password. If you insert a non-AT&T SIM Card then turn on the phone, type in the password and you should be unlocked.

Oct 23, 2007 | Samsung SYNC SGH-A707 Cellular Phone

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