To be extra safe, it's a good idea to remove your SIM card, which may contain your phone number, security information and billing info. To remove, locate the SIM tray (usually on the right side of your device) and insert a paperclip into the hole to pop out the tray. Take out the SIM card and replace the tray.
The buyer has no need for your SIM card, so you should keep this as well. You'll typically need a pin-like tool to pop the SIM card out of its storage slot. Wipe the phone and return it to factory conditions. This should be common sense, but you absolutely must "wipe" your phone before giving it away.
That's your number and no one else can use it, even if you forgot to remove the sim card from your phone. If they replace your phone, when you get it back, you just get a new sim card from your cellular provider and they'll put your number on the new card. Stop worrying about this.
Take the SIM card out
The Subscriber Identity Module card stores information about you and your cell phone, including phone numbers, text messages, billing information, and data usage. When you sell your phone, the new owner will need his or her own SIM card so there's no reason to leave it in your phone.
One last thing before you perform a factory reset: it's time to remove your SIM card if you have one. Removal of the SIM card does not affect the reset process. In fact, the same reset process runs on your iPhone whether it uses a SIM card or is designed for CDMA networks.
Go back to Settings and tap General > Transfer or Reset [device] > Erase All Content and Settings. If you turned on Find My [device], you might need to enter your Apple ID and password. If your device uses eSIM, choose the option to erase your device and the eSIM profile when asked.
You should have removed it. You cannot delete anything off the SIM, and the iPhone does not write anything to the SIM, however it does contain your wireless account info.
Data that SIM cards contain include user identity, location and phone number, network authorization data, personal security keys, contact lists and stored text messages. SIM cards allow a mobile user to use this data and the features that come with them.
Does taking out your SIM card delete everything? The short answer is: nope. The shorter answer is: no. Taking out your SIM card will not delete all of your data.
What Data is Stored on iPhone SIM Cards. Unlike some other mobile phones, the iPhone's SIM is only used to store customer data like phone number and billing information. The SIM on the iPhone can't be used to store contacts or other user data. You also cannot back up data to or read data from the iPhone's SIM.
We recommend that you remove the SIM card from your phone before sending it to us. Your SIM card stores information that uniquely identifies your phone on a cellular network. By removing your SIM card, you protect your private service-subscriber key and free your phone to be resold on the second-hand market.
It contains your phone number, which is connected to your account with your wireless provider, and it houses a SIM, which connects your phone to a wireless network. But everything else stays on your phone when you remove the SIM card.
No. SIM cards do not store data.
The SIM card memory is not enough to save your pictures. It stores a small amount of info including: your phone number. some contacts and text messages.
A SIM card, at its most basic, is a chip that allows phone networks to recognise you to send and receive data. But it gets more complex as the SIM can store more data than simply that which is required to recognise your network settings.
Don't worry, resetting old iPhone will not affect the new one. It will only erase content on old iPhone where the operation is done. The data that have been transferred to the new iPhone or the files that have been saved to iCloud will not be affected in any way.
The factory reset feature on the Android phone doesn't affect the SIM card, so it cannot help you erase SIM card files.
Although deleting data via 'Erase All Content and Settings' on iPhone will make your device as clean as new, but it is not enough. Your iPhone data after factory reset is still recoverable by hackers.
To recover data after factory reset Android, navigate to the "Backup and Restore" section under "Settings." Now, look for the "Restore" option, and choose the backup file you created before resetting your Android phone. Select the file and restore all of your data.
If you're going to keep the same phone number, you may be able to transfer your SIM card to your new phone. If you're not going to reuse the SIM card, destroy it. If your phone has an SD memory card for storage, remove it.
This is a question we've gotten from many customers… “Do I need to remove my SIM card before sending in my phone?” And the answer is: Yes. While it's not 100% necessary, it's always a smart idea!
All phones, whether an iPhone or an android, can be tracked down without a sim card or network. Still, they will need to have a secure Wi-Fi connection to be accurate.