will it erase my memory if i put a new sd card in my s4

Solution
Not if you backup all the data on the existing SdCard on to your PC when remove it to put the new one in. Then you can connect the device to the PC you can move those data on to the new card.

The device's internal memory will not be affected.
Not if you backup all the data on the existing SdCard on to your PC when remove it to put the new one in. Then you can connect the device to the PC you can move those data on to the new card.

The device's internal memory will not be affected.
 
Solution