What is a test sim card?

The GSM test card, CDMA test card, UIM test card, RUIM test card, WCDMA mobile phone test card, TD-SCDMA test card, CDMA2000 test card, mobile phone test card use special chips from international famous semiconductor manufacturers. 3V/5V compatible and 5-6 contact compatible design, suitable for all mobile phones. With dedicated COS system, fully comply with […]