Can my unlocked ATT Capitvate work on Softbank?

**jrinco11** · 10-12-2011, 06:01 PM

Hi all - I would like to know if I would be able to bring my unlocked at&t captivate (us version of samsung galaxy s 1) that is quad band umts/hsdpa (850,900,1900,2100) over to japan and have it work (data, calls, sms - everything) on Softbank (which I already have an account and non-smartphone)? As I understand it, Japan uses WCDMA 2100 for 3G/data, and from what I've read, UMTS = WCDMA, so I would think it *should* work.... right?

any help would be greatly appreciated!

(apologies if this is not the right place to post this question!)

**eddieroolz** · 10-12-2011, 09:40 PM

Band should be compatible, so if anything it would be up to SoftBank's policy regarding non-Japanese phones.

**patrixl** · 10-12-2011, 10:39 PM

Yes it will work. You'll need to configure your APNs properly and to get S!Mail you'll need to configure an SMS/MMS application to use the right user agent (there's some howto for that in the Japanese Android Phones forum right here).

**yamanote** · 10-13-2011, 07:10 AM

Yeah, it should be compatible, but I'm not sure how the network will take to you using a non-smartphone sim with a smartphone. If I understand it correctly, there's a different sim for smartphones/iPhones/'dumb'phones, but I'm not sure if it'll detect your Captivate as a smartphone or a dumbphone.

**patrixl** · 10-13-2011, 07:44 AM

Originally Posted by yamanote

Yeah, it should be compatible, but I'm not sure how the network will take to you using a non-smartphone sim with a smartphone. If I understand it correctly, there's a different sim for smartphones/iPhones/'dumb'phones, but I'm not sure if it'll detect your Captivate as a smartphone or a dumbphone.

Last year, no issues with a prepaid sim + nexus one...