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20

You can find the option under Settings > Phone > SIM PIN.


18

There is an Apple support document on how to do this. You don't need to keep a sim in the phone but you need to put one into it to activate it before taking it back out. Here's the procedure for 3G and 3GS: You can use any SIM card associated with the carrier that your device supports to activate the phone. Simply place a SIM card from the last ...


13

This is, unfortunately, expected behavior. Whenever you activate an iPhone (which you do as part of an OS install) it talks to Apple's servers and does various things like exchange crypto certs for APNS, etc. It also checks the IMEI of the phone to see what carrier Apple sold it to, and validates the SIM is valid for that carrier (if you buy an unlocked ...


13

Go to your local GSM carrier (AT&T in the US) and try to reactivate it. A couple of possible scenarios seem likely: The phone is recent enough to be on a contract - they'd still have the payer on file and you could contact them about giving them the phone back or them cancelling the contract (or you taking it over). The phone is free and clear - this ...


13

According to this article, the problem isn't just the size. It turns out, as well as a smaller size, the Nano SIM is reportedly 15% thinner than the Micro SIM cards. So even if users cut the Micro SIM to Nano SIm size with a knife or nano SIM cutter tool, the Sim card would still be too thick to put in the iPhone 5.


9

Yes, you can use the device as if it were an iPod Touch without cellular service. No need to remove the SIM. It will automatically be deactivated when your new phone is activated. You can also purchase a prepaid SIM from a service using provider network to which the phone is attached if you'd like to use it as an emergency or burner phone. For example, h2o ...


9

iMessage can also register email address (like your Apple ID), that's how it works on iPad and iPod Touch. So it's completely normal to be able to send iMessages with an SIM-free iPhone. As long as you are connected to a WiFi network.


8

gentmatt's answer is correct, however if you don't need to make phone calls at all you can also just turn on airplane mode. I have done this many times abroad. Turn on airplane mode in settings, then turn wifi back on. Your cellular signal stays off.


8

It proved trivial: power down iPhone change SIM card turn iPhone on launch Whatsapp Whatsapp asks something like "Mobile network changed. Switch to new phone number?". Tap "No" That's it. All groups, chat history and contacts preserved. My friends see me (and chat history with me) as I never changed SIM card or number. Later switch back to the original ...


7

PUSH! The old way was to insert the tool at an angle and kind of push sideways and pull out at the same time, using leverage, and the tray would hang onto and come out with the tool, but with the new iPad (2012), simply insert the SIM eject tool straight into the tiny hole (straight being the way it enters with the least resistance, i.e. perpendicular to ...


6

No - the sim card only provides an ICCID number to the phone. That number is read once per boot as the phone just uses the sim to identify what account to bill for service when registering with the nearby cell towers (IMEI and ICCID together let the system know what number to assign your phone and who to bill). Something else must be causing your observed ...


6

I bought an old, used AT&T sim card from eBay for $4, inserted it into the phone, and that worked fine -- now the phone can be upgraded to new iOS revision, even though I never plan to use it as a phone ever again. As I learned the hard way: do not remove and throw away the AT&T sims from your old iPhones, no matter what!


6

The iPad with 3G is sold unlocked. In the UK, the iPad with 3G will work with Orange, Three, O2, and Vodafone. To be pedantic, the iPad's 3G connection will not work with carriers such as T-Mobile USA, which in part uses the 1700 MHz frequency for 3G. The iPad with 3G supports the necessary frequencies to fully work in the UK with Orange, Three, O2, and ...


6

No - if the device is waiting at the activate screen it won't run normally. Yes - once the activation is done, you can pull the SIM card. Activate means that the OS becomes usable. Unless (and until) your phone gets jail broken or authorized unlocked (contact your carrier), by design you need a carrier SIM to activate the phone after each restore. Major ...


5

short answer: No The iPhone 5 has the Nano-SIM The iPhone 4 and 4s have the Micro-SIM iPhone 5 is not compatible with existing micro-SIM cards. found on the apple site You have to go to your mobile provider and get a replacement Nano-SIM if you're using the micro-SIM. The other way around you can use an adapter or get a replacement SIM as well. It ...


4

Settings → General → About → Celluar Data Number


4

Without going into the technical details, iOS ships in a deactivated state and needs to contact an activation server to determine the carrier and locking status each time the device is restored. iTunes performs the unlocking of all phones less than iOS 5. With iOS5, the device can self activate or activate through iTunes. When a device is sold, it enters ...


4

You'd need an adapter like this one to make it fit, but it should work.


4

Take it to the Apple store if there is one near you. Usually they will switch out the phone if still under warranty.


4

Providing the iPhone 5c that you are moving the SIM card to is not locked to a different network, this is possible.


3

If the SIM card is deactivated, replace the SIM card with one that is functional and will provide the device with a data connection. This will allow the phone to communicate its location to Find My iPhone which the original owner can use to locate the device. You can't restore a device with an active Activation Lock (except DFU and that just puts it back in ...


3

No. You could cut it to the same dimensions, but the risk to damage the chip is high. Additionally the nano sim is slightly thinner, so it still wouldn't be a good fit. I suggest you exchange your sim card with your operator. Note that there exist adapters to fit a nano sim in a larger form factor though.


3

The downsides of converting your SIM are: You no longer have a SIM to activate your old iOS phone (assuming it's an iPhone). If you mess up the cut, you still need to go get a new SIM (perhaps two) If your cut isn't precise, the SIM could wiggle loose later from the carrier since the nano-SIM carrier is designed for a thinner card and very precise ...


3

I have two ideas for you: 1) There's a UK mobile network called Ovivo, basically, you order a sim with £10 on it once, and you'll have 500MB of mobile broadband for your grandma's iPad forever. She'll also be able to use the £10 for additional broadband if she runs out (either by pre-purchasing some — and maybe you could do that online for her), or it'll ...


3

If you buy a new iPhone and switch SIM's, you'll be fine. Both the iPhone 4 and the iPhone 4S are using the microsim, so SIM's will fit in both iPhones. If your current iPhone 4 is registered on the account of your ex, he won't get a notice of SIM's being switched. However, if you reconfigured the iPhone with a new account, your ex might know the phone ...


3

Is this a 'SIM PIN'? If so, go to settings - phone - SIM PIN and turn it to off.


3

Depends on what iPad you have. Here's Apple's guide to SIM cards in their devices.


3

At the risk of stating what you've probably already tried... Insert the Chinese sim card you want to use.


3

The iPhone 4S is a world-phone, compatible with Verizon and Sprint's CDMA networks in the US and GSM networks worldwide. It has a micro-SIM slot for connecting to GSM networks. Most phones sold in the US are locked to the carrier you buy it from, you may have luck getting them to unlock it so you can use a different SIM. Unlocked iPhones are (tautologically) ...



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