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Question: can you put a 3G sim card into a 4G iphone?

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Question: can you put a 3G sim card into a 4G iphone?

It would make sense that I would not be able to. However it would nice if all I had to do was swap out my sim card to upgrade my phone.

 

 

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Re: Question: can you put a 3G sim card into a 4G iphone?

There are no 4G iPhones, simply does not exist.

The iPhone 4 and 4S both utilize a microSIM. 

The Original iPhone, 3G, and 3GS use a standard size SiM.

To use a standard size SIM in a a 4 or 4S would require cutting the SIM down.

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ACE - Expert

Re: Question: can you put a 3G sim card into a 4G iphone?


Ryan_ATL wrote:

There are no 4G iPhones, simply does not exist.

 



I guess that depends on what your definition of 4G is. There are no LTE capable iphones (yet) but the Iphone 4S is HSPA+ capable and AT&T does consider HSPA+ to be a 4G technology: http://www.att.com/esupport/article.jsp?sid=KB115944#fbid=KlXa9UfAHvA

 

Regarding the original question, if it were not for the different size sims, yes you could put your 3G sim card into the iphone 4s and it would work. However, I'm not sure you would get the higher data speeds offered by HSPA+. For that, I believe you do need a sim that is compatible.

 

*The views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.
Message 3 of 4
Professor

Re: Question: can you put a 3G sim card into a 4G iphone?

I don't think the SIM has anything to do with whether you get 3G vs HSPA+ speeds. That is based on the hardware in the phone and maybe your data plan also. The SIM just contains account info. I'm sure there are people using SIMs from their 4 in their 4S and they are working fine.
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