O2 IPhone 4 will it work with AT and T sim

will1407 · will1407 #1 (**permalink**)

04-04-2011, 03:42 AM

Hi
I am going on holiday for 3 weeks to america shortly, and do often. I currently have a iPhone 4 on O2.
If I purchase an AT and T sim will it work in my phone?
O2 will rip me off with call prices any suggestions?
Cheers
Will

Buzzard2010 · Buzzard2010 #2 (**permalink**)

04-04-2011, 05:37 AM

If you bought the iPhone straight from O2 then it will be locked to only using their network. The only option would be to look into Jailbreak/ Unlock.

My suggestion... get a cheap PAYG phone on AT&T for while you are over there.

HTH,
- Simon

chscag · chscag #3 (**permalink**)

04-04-2011, 01:47 PM

Or, get an unlocked iPhone 4, which should then work with the AT&T sim card. Just make sure the unlocked iPhone is using GMA. (Which is what AT&T uses.) German T-Mobile unlocked iPhones work in the US with an AT&T sim card.

Aptmunich · Aptmunich #4 (**permalink**)

04-04-2011, 02:49 PM

Yes, all european (GSM) iPhones you've bought outright will work with AT&T (calls and 3G data) and T-Mobile (calls & slower EDGE data).

However if you got your iPhone on a contract, you can't just swap the SIM unfortunately. You could either pay roaming costs (expensive) or just stick to making voice calls and use wifi wherever possible.

Buzzard2010 #2 (permalink)
Member Since: Oct 22, 2010 Location: Bakewell, UK Posts: 2,532 Mac Specs: iMac G3 800MHz :D \| PowerMac G4 \| MacBook Pro 15" 2.8GHz C2D 500GB HDD 4GB 9600M / 9600M GT 10.7.1	04-04-2011, 05:37 AM If you bought the iPhone straight from O2 then it will be locked to only using their network. The only option would be to look into Jailbreak/ Unlock. My suggestion... get a cheap PAYG phone on AT&T for while you are over there. HTH, - Simon Rest In Peace Steven Paul Jobs February 24, 1955 - October 5, 2011 [aged 56] If you have been helped, don't forget to use the Reputation system just above the post to the right. May 2011 Nominated: March 2011 & April 2011
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Aptmunich #4 (permalink)
Member Since: Mar 09, 2004 Location: Munich Posts: 9,075 Mac Specs: Aluminium Macbook 2.4 Ghz 4GB RAM, SSD 24" Samsung Display, iPhone 4, iPad 2	04-04-2011, 02:49 PM Yes, all european (GSM) iPhones you've bought outright will work with AT&T (calls and 3G data) and T-Mobile (calls & slower EDGE data). However if you got your iPhone on a contract, you can't just swap the SIM unfortunately. You could either pay roaming costs (expensive) or just stick to making voice calls and use wifi wherever possible. Mac-Forums Twitter \| Mac-Forums Blog My Twitter \| Jetplane Journal
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O2 IPhone 4 will it work with AT and T sim

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will1407 #1 (permalink)
Member Since: Apr 04, 2011 Posts: 1	04-04-2011, 03:42 AM Hi I am going on holiday for 3 weeks to america shortly, and do often. I currently have a iPhone 4 on O2. If I purchase an AT and T sim will it work in my phone? O2 will rip me off with call prices any suggestions? Cheers Will
	QUOTE Thanks

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