Mobile phone test card / Telecom SIM nano mobile phone test card / it is a plastic card embedded with microchips (usually the size of a credit card). The general size is 85*45*0.8mm, and the microchip embedded in the middle is 12*9*0.78mm. We refer to the mobile phone test card / Telecom SIM nano mobile phone test card / it is the microchip embedded in the middle. Nano SIM card is also called the fourth form element integrated circuit board, which is a new generation of mobile phone SIM card. It is smaller and thinner than the micro SIM being used. Apple and Nokia competed for the design standard of nano SIM card, and submitted the design scheme in March 2012, waiting for the vote of European Telecommunications Standards Association. It was reported on September 13, 2012 that domestic operators purchased nano SIM cards, and the first batch was launched on September 21, 2012. Apple released iPhone 4 and iPad in 2011, and used micro SIM card for the first time. Because iPhone 4 pursues a thinner body, compresses the internal space of the body and increases the battery capacity, the volume of micro SIM card is twice that of standard SIM card.

Mobile phone test card / Telecom SIM nano mobile phone test card / please note that when using mobile phone test card:

(1) Do not bend the card, and the metal chip on the card should be protected more carefully;

(2) Keep the metal chip clean and avoid contamination with dust and Egyptian chemicals;

(3) In order to protect the metal chip, please avoid pulling out the mobile phone test card directly from the mobile phone frequently;

(4) Do not put the mobile phone test card in an environment above 85 ℃ or below -35 ℃;

(5) Before taking out or putting in the mobile phone test card to test the mobile phone, please turn off the power of the mobile phone first;

(6) In case of low power warning, please turn off the phone and replace the battery.

(7) The mobile phone test card must be stored in a dry and ventilated environment to prevent the chip from rusting