New answers tagged sim
You most certainly can use any iPhone without needing an active data connection. You can turn off the Cellular Data to help save some battery life, but the hardware will still use some energy no matter the settings you choose. As to knowing the product, you will need to either risk losing the money, buy it though escrow service, clear things with the buyer ...
The phone will need to be activated using a valid SIM card. If the device is carrier-locked it will need to be a SIM of that carrier. However you can just take out the SIM after activation and the phone will work fine until you reset it (then it would need to be activated again).
Yes, as you said yourself you need a simcard to activate them. But afterwards you can use them "just Wi-Fi" without any problem. Sorry I can't write any longer answer, this is just as it is.
If you have a contract, the fixed monthly fees will still apply (if you use it or not) with SIM installed or not. If you do not use your mobile data (true your carrier) but use free WiFi, you will not be charged any fees for that by your carrier.. You can always go into your Cellular settings to turn off data which will allow for you to receive phone ...
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