Will old SIM card still work?
As long as the SIM card is the same size for the same make/model phone, you will be able to use it.
What do I do with an old SIM card?
You can send the card off to an incinerator, incinerate it yourself or use a hammer to thoroughly smash it while turning the stored data to an irretrievable bunch of mush. A cell phone or recycling center might be able to help but personally watching the card being destroyed is the only sure bet for protection.
Does old SIM card have data?
Answer: A: User data is not stored on the SIM card. To clear the old phone, use the following instructions: What to do before you sell, give away, or trade in your iPhone, iPad, or iPod touch – Apple Support and then set it up as new.
What information does an old SIM card hold?
Despite the complicated name, it’s basically your phone number. They can also store contact information, telephone numbers, SMS messages, billing information, and data usage. Plus, your SIM will have a personal identification number (PIN) to protect against theft.