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You definitely can if you have an iphone 4. The microsim card is common to both iPhone 4 and iPad1/2 3G. I have tried it myself - disabled wifi and inserted my iPhone 4 microsim card into the iPad 2 3G. It works.

If you ask any Apple Store staff, the standard line is misleading and nobody would give a straight yes or no.

I think we know it works, the question is can you use it and not get any notice from AT&T as others have been stating.
If you know a method that works, please let us know.
 
what about T-Mobile's card?

I have an unlocked BB Curve, and a T-Mobile plan. I am getting my iPad2 (3G AT&T) in a day or two, and plan to take it on the road on a brief vacation. I'll be in the Southwest and probably in some remote areas...

I am wondering if anyone knows the answer to this:

Would it be possible to buy a cheap prepaid T-Mobile phone, activate it, take out the SIM card and cut it down to micro SIM size - then put it into the iPad, and use the T-mobile webdata day plan (unlimited data for $1.45 or something like that) to get data - instead of spending 30 bucks for the month? I think that with T-Mobile, the 1.45 is subtracted from the prepaid value on the card, and you just buy more minutes when you need them.

I could then get a micro-SIM adapter, and replace it into the T-mobile phone, and add prepaid minutes as needed!

Has anyone tried that?
 
I put my iPhone 4 microsim in my new iPad 2 with 4.3.3 JB. It keeps asking me to sign up for a data plan. It there some tweak I need to get?
 
Same thing happened with me. I would love to get this working.

Most likely, the data provider (APN) needs to be setup. I had the same issue with my iPhone 4 when I first did a JB, and I needed to generate a valid APN - see this older article. Just a word of advice, I'm not sure that this is the case with the iPad, I'm just trying to apply what I know regarding iPhone JB - you should have this confirmed by someone more knowledgeable than me.
 
Most likely, the data provider (APN) needs to be setup. I had the same issue with my iPhone 4 when I first did a JB, and I needed to generate a valid APN - see this older article. Just a word of advice, I'm not sure that this is the case with the iPad, I'm just trying to apply what I know regarding iPhone JB - you should have this confirmed by someone more knowledgeable than me.

Yes, but in the more current versions of iOS for the iPad, they don't allow you to edit the APN. I can still do it with my iPhone, but not the iPad. Is there any tweak that allows an APN edit?
 
Ive since found out that there are APN editors that will allow you to edit the ipad APN and use an iphone SIM card, but ATT will detect this and will shut off your data service and "recommend" that you get an ipad data plan.
 
Any Clues

unless ur phone has a micro sim and mine does not so no (i have an iphone)

My iphone 4 uses a micro sim card, which I cut down using a sim card cutter. I had the sim in another phone previously which was the larger sim, so, I purchased the cutter, and an adapter so if I ever have to put it back in my old phone, I can.

Can I use this UNLIMITED data sim in my ipad I will be getting next week? Granted this will be a hassel switching back and forth, so how do I get another micro sim to use in the ipad and still have unlimited data?
 
Works fine if you cut down the sim to the micro sim size. You can use an exactoknife or buy one of those specialty cutters. Just save the trimmed off portion so you can reuse it if you need to get it back to full size.

I used an exactoknife and it worked fine.

In fact I am using my AT&T blackberry SIM and data plan in the iPad.

No problems. You just have to change the APN settings in the iPad.

Can I use my AT&T blackberry SIM and Data plan on the iphone3? The iphone is not unlocked is this necessary? When I put the sim card in the iphone, I can make calls but I get no internet access...
 
yar

you need to get an iPhone plan, if you call att or go into a store they'll switch your blackberry to iPhone (if its unlimited you can keep it)
 
it should work if you set yoru ipad to the mobile web APN on O2.
or just tether it with your iPhone and save yourself messing about with the Sims. I do that. The iPad cost me £100 less as well as i didnt pay for a sim slot (cost thats worth a £100 isnt it! NOT!)
 
iPhone micro-SIM in iPad (on AT&T with iOS 5)?

I have the iPhone 4 and iPad 1, both on iOS 5.0.1. When the iPad originally shipped with iOS 3.2, I was able to pop in my iPhone micro-SIM and change some setting (APN settings I think), and successfully use my iPhone data plan on the iPad.

I don't know where the tutorial I originally used is, and I suspect Apple has blocked that workaround with iOS updates and/or AT&T via device detection methods.

Anyone know if and how I can do this when I'm in a pinch? Thanks!
 
I have the iPhone 4 and iPad 1, both on iOS 5.0.1. When the iPad originally shipped with iOS 3.2, I was able to pop in my iPhone micro-SIM and change some setting (APN settings I think), and successfully use my iPhone data plan on the iPad.

I don't know where the tutorial I originally used is, and I suspect Apple has blocked that workaround with iOS updates and/or AT&T via device detection methods.

Anyone know if and how I can do this when I'm in a pinch? Thanks!

Well I know tetherme doesn't really work only iPad 2 but it comes with an APN editor that does install. Works great.
 
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Argh - detected immediately

As a data point, I have a rather antiquated Treo 680 with an unlimited data plan. Bought a SIM card cutter and adapters on e-bay concurrent with ordering my iPad. Tonight was the first chance I had to try it out. As soon as I attempted to connect to the internet, I got a message box stating that I had not purchased a data plan, and containing two buttons: buy one now or buy one later.

Curse you, AT&T!
 
Most likely, the data provider (APN) needs to be setup. I had the same issue with my iPhone 4 when I first did a JB, and I needed to generate a valid APN - see this older article. Just a word of advice, I'm not sure that this is the case with the iPad, I'm just trying to apply what I know regarding iPhone JB - you should have this confirmed by someone more knowledgeable than me.

Great job man, I've just used this on Optus network (Australia) and it worked!!!

Awesome!
 
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