Question about Sony Ericsson W300 Cellular Phone

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SIM Unlock I purchased a w300i from someone, and would like to make it work for with my Cingular SIM card. How can I do it?

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A repair shop should take the network lock off for you

Posted on Dec 28, 2007


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Posted on Jan 02, 2017


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How to unlock sony ericsson w300i cingular

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Where can I buy a sim card to use while traveling out of Canada to the United States?

First, you need to make sure your phone is SIM unlocked. After unlocking your phone, you can purchase an Cingular (AT&T) SIM card on eBay. Then call 1-800-331-0500. And set up a Go Phone account.

Go Phone is owned by Cingular (AT&T) in the United States. This is a pre-pay cell phone account that uses the Cingular (AT&T) SIM cards. You will have several options as to how you will be billed depending on the service you require. Pre-pay data is also available too, for an extra fee with the Go Phone plan.

See Go Phone Plans:

AT&T uses the 850/1900MHz band (1900 MHz UMTS band for 3G data) for cell phones in the US. Make sure your phone can use this bands.

If you need to SIM unlock your phone, you can do this two different ways.

The first is to contact your service provider and inform them that you need to have your phone SIM unlocked for international travel. Most providers require your account to be in good standing and that you've been their customer for a certain amount of time. Then, it's free.

The second is to purchase an unlock code. These can usually be found on eBay for as little as $2 US.

To search for the unlock code for your phone, on eBay, type in your phone model and the words 'unlock code' and your current service provider. (Example: Samsung BlackJack i607 Unlock Code Rogers) Once purchased, simply follow the instructions sent to you with the code and unlock your phone - then use the Cingular (AT&T) SIM card with the Go Phone pre-pay plan.

Tip: On some phones you must insert a SIM card NOT used by your current service provider when you enter the unlock code.

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RIM BlackBerry 7290 network problem

Blackberry Technical Support team on the WEB is place to seek an answer. Or any documentation that came with the device From what you say- and I am not an expert with CellPhone devices/Systems- there appears to be no service available in your part of the world. Check out Blackberry

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