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Micro SIM question

212rikanmofo

macrumors 68000
Original poster
Jan 31, 2003
1,692
645
I have just recently unlocked my off contract AT&T iPhone 4. I would like to test it out using a T-Mobile SIM. Do they use Micro SIM or the old standard size?

And if not, I've seen and heard that people can easily modify the SIM down to Micro size. But once it's been trimmed, you won't be able to put it back into the original t-mobile phone again? Not sure if all tmobile phones have been updated to use the micro-sim or what not so I'd like to know before I start trimming. This is just for testing my unlock, and then I'm putting the sim back to brother's phone (tmobile).
 

212rikanmofo

macrumors 68000
Original poster
Jan 31, 2003
1,692
645
Since im in the US, the only other GSM carrier is T-mobile. So I'm limited. Do the newer tmobile phones use Microsims?
 
Comment

Reason077

macrumors 68020
Aug 14, 2007
2,486
1,242
I'm sure T-Mobile can give you a microsim if you ask for it. Some of the latest T-Mobile phones (eg Galaxy S3) certainly do use them.
 
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212rikanmofo

macrumors 68000
Original poster
Jan 31, 2003
1,692
645
I'm sure T-Mobile can give you a microsim if you ask for it. Some of the latest T-Mobile phones (eg Galaxy S3) certainly do use them.

Wouldn't i need a SIM that's "activated" though? I assume that a new blank SIM card wouldn't work.
 
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Sbary128

macrumors newbie
Mar 31, 2009
17
0
why not buy a noosy micro sim cutter to trimme it, and use a micro sim adapter to recover the sim to normal size ?
 
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Mr Hill

macrumors 6502a
Apr 28, 2012
500
1
Charlotte, NC
Go activate a tmobile pay as you go sim at one of their stores. It's only $10 to activate and they will give you the microsim.
 
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