How many short messages and contacts are stored in Unicom's 2G and 3G cards 34K and 62K respectively?

China Unicom's USIM card has larger capacity (128K card), more security and reliability (two-way authentication) and more powerful functions than the traditional 2G SIM card. It has the functions of 3G and 2G subscriber identification cards, and is fully compatible with 2G terminals and services. Now Unicom's 3G part uses USIM card.

The main features of China Unicom USIM card are: 3G phone book supports 500 contacts, each of which includes name, mobile phone and fixed telephone; Support 200 e-mail addresses; Support 50 short messages; Support OTA services and JAVA applications. (Note: USIM card can store 500 contacts in 3G mobile phone, but only 250 contacts in 2G mobile phone).

Ordinary SIM cards have three capacities: 16K, 32K and 64K. 32K can store 100 contacts and 20 short messages, and 64K can store 250 contacts and 40 short messages.