Every user uses a Sim Card to identify the cellular provider. These Sim cards have useful functions. There is enough storage in a small plastic card to hold the numbers of names, numbers and addresses, and other details. It is especially useful to Transfer Sim card data to another Sim card. 

It is especially useful for switching to a new phone, you can copy the data from the old phone and transfer it to a new one. it can save your tedious data entry on small keys. It is a very useful skill to acquire. 

Step one:

Turn on the old phone, you are transferring the data, select the address book. It depends on the phone. it may be labeled as an address book, contact numbers. 

Step 2: 

Firstly, you select the contact and phone number, you want to save. You can also activate the submenu by clicking the Menu button. Select the contact, Select edit and long-press the contact. Select Copy to Sim card and Press enter to Ok and centre of the phone directional Pad. It depends on the specific phone. 

Step 3: 

Follow step 2 to get all the desired contacts. If your phone has an option “copy all to Sim card”. The Feature built into the address book. You can activate via Sub menu to save time. 

Sep 4 : 

You can turn off your old phone, and remove the battery cover and slide out the Sim card out of the slot. You can remove the battery cover and battery of the phone. insert the Sim card into the slot and replace the battery and battery cover and turn on to the New phone. 

You can open the address book into the new phone, you will see all the contacts saved. If you need a back, you need to use a new Sim card. You can copy the contacts to the memory of the new phone in the Sub Menu.